Finding the Fourth Proportional to 77,963.61, 107,589.72 and 42,153.54

Step by Step Solution

1. Step 1: Write the proportion equation
   77,963.61 : 107,589.72 = 42,153.54 : x
2. Step 2: Convert to fraction form
   77,963.61/107,589.72 = 42,153.54/x
3. Step 3: Cross multiply
   77,963.61x = 107,589.72 × 42,153.54
4. Step 4: Simplify right side
   77,963.61x = 4,535,287,385.71
5. Step 5: Solve for x
   x = 4,535,287,385.71/77,963.61
6. Step 6: Final answer
   x = 58,171.85