Finding the Fourth Proportional to 77,499.31, 116,300 and 42,463.57

Step by Step Solution

1. Step 1: Write the proportion equation
   77,499.31 : 116,300 = 42,463.57 : x
2. Step 2: Convert to fraction form
   77,499.31/116,300 = 42,463.57/x
3. Step 3: Cross multiply
   77,499.31x = 116,300 × 42,463.57
4. Step 4: Simplify right side
   77,499.31x = 4,938,513,191
5. Step 5: Solve for x
   x = 4,938,513,191/77,499.31
6. Step 6: Final answer
   x = 63,723.32