Finding the Fourth Proportional to 42,767.12, 63,724.42 and 38,111.60

Step by Step Solution

1. Step 1: Write the proportion equation
   42,767.12 : 63,724.42 = 38,111.60 : x
2. Step 2: Convert to fraction form
   42,767.12/63,724.42 = 38,111.60/x
3. Step 3: Cross multiply
   42,767.12x = 63,724.42 × 38,111.60
4. Step 4: Simplify right side
   42,767.12x = 2,428,639,605.27
5. Step 5: Solve for x
   x = 2,428,639,605.27/42,767.12
6. Step 6: Final answer
   x = 56,787.54