Finding the Fourth Proportional to 78,151.77, 107,849.30 and 42,342.75

Step by Step Solution

1. Step 1: Write the proportion equation
   78,151.77 : 107,849.30 = 42,342.75 : x
2. Step 2: Convert to fraction form
   78,151.77/107,849.30 = 42,342.75/x
3. Step 3: Cross multiply
   78,151.77x = 107,849.30 × 42,342.75
4. Step 4: Simplify right side
   78,151.77x = 4,566,635,735.86
5. Step 5: Solve for x
   x = 4,566,635,735.86/78,151.77
6. Step 6: Final answer
   x = 58,432.92