Finding the Fourth Proportional to 77,411.07, 116,149.50 and 42,309.72

Step by Step Solution

1. Step 1: Write the proportion equation
   77,411.07 : 116,149.50 = 42,309.72 : x
2. Step 2: Convert to fraction form
   77,411.07/116,149.50 = 42,309.72/x
3. Step 3: Cross multiply
   77,411.07x = 116,149.50 × 42,309.72
4. Step 4: Simplify right side
   77,411.07x = 4,914,252,823.14
5. Step 5: Solve for x
   x = 4,914,252,823.14/77,411.07
6. Step 6: Final answer
   x = 63,482.56