Finding the Fourth Proportional to 78,601.98, 108,470.08 and 42,791.92

Step by Step Solution

1. Step 1: Write the proportion equation
   78,601.98 : 108,470.08 = 42,791.92 : x
2. Step 2: Convert to fraction form
   78,601.98/108,470.08 = 42,791.92/x
3. Step 3: Cross multiply
   78,601.98x = 108,470.08 × 42,791.92
4. Step 4: Simplify right side
   78,601.98x = 4,641,642,985.75
5. Step 5: Solve for x
   x = 4,641,642,985.75/78,601.98
6. Step 6: Final answer
   x = 59,052.49