Finding the Fourth Proportional to 77,934.80, 107,549.86 and 42,124.72

Step by Step Solution

1. Step 1: Write the proportion equation
   77,934.80 : 107,549.86 = 42,124.72 : x
2. Step 2: Convert to fraction form
   77,934.80/107,549.86 = 42,124.72/x
3. Step 3: Cross multiply
   77,934.80x = 107,549.86 × 42,124.72
4. Step 4: Simplify right side
   77,934.80x = 4,530,507,738.54
5. Step 5: Solve for x
   x = 4,530,507,738.54/77,934.80
6. Step 6: Final answer
   x = 58,132.02