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Finding the Fourth Proportional to 78,441.90, 117,637.57 and 25,838.86

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Solution

The fourth proportional to 78,441.90, 117,637.57 and 25,838.86 is: 38,749.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,441.90 : 117,637.57 = 25,838.86 : x
  2. Step 2: Convert to fraction form
    78,441.90/117,637.57 = 25,838.86/x
  3. Step 3: Cross multiply
    78,441.90x = 117,637.57 × 25,838.86
  4. Step 4: Simplify right side
    78,441.90x = 3,039,620,701.97
  5. Step 5: Solve for x
    x = 3,039,620,701.97/78,441.90
  6. Step 6: Final answer
    x = 38,749.96

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