Finding the Fourth Proportional to 77,498.31, 116,298.50 and 42,462.57

Step by Step Solution

1. Step 1: Write the proportion equation
   77,498.31 : 116,298.50 = 42,462.57 : x
2. Step 2: Convert to fraction form
   77,498.31/116,298.50 = 42,462.57/x
3. Step 3: Cross multiply
   77,498.31x = 116,298.50 × 42,462.57
4. Step 4: Simplify right side
   77,498.31x = 4,938,332,984.83
5. Step 5: Solve for x
   x = 4,938,332,984.83/77,498.31
6. Step 6: Final answer
   x = 63,721.82