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Finding the Fourth Proportional to 105,677.08, 145,849.26 and 65,403.80

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Solution

The fourth proportional to 105,677.08, 145,849.26 and 65,403.80 is: 90,266.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,677.08 : 145,849.26 = 65,403.80 : x
  2. Step 2: Convert to fraction form
    105,677.08/145,849.26 = 65,403.80/x
  3. Step 3: Cross multiply
    105,677.08x = 145,849.26 × 65,403.80
  4. Step 4: Simplify right side
    105,677.08x = 9,539,095,831.19
  5. Step 5: Solve for x
    x = 9,539,095,831.19/105,677.08
  6. Step 6: Final answer
    x = 90,266.46

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