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Finding the Fourth Proportional to 66,578.41, 99,866.60 and 19,831.29

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Solution

The fourth proportional to 66,578.41, 99,866.60 and 19,831.29 is: 29,746.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,578.41 : 99,866.60 = 19,831.29 : x
  2. Step 2: Convert to fraction form
    66,578.41/99,866.60 = 19,831.29/x
  3. Step 3: Cross multiply
    66,578.41x = 99,866.60 × 19,831.29
  4. Step 4: Simplify right side
    66,578.41x = 1,980,483,505.91
  5. Step 5: Solve for x
    x = 1,980,483,505.91/66,578.41
  6. Step 6: Final answer
    x = 29,746.63

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