Finding the Fourth Proportional to 78,785.88, 108,725.98 and 42,977.18

Step by Step Solution

1. Step 1: Write the proportion equation
   78,785.88 : 108,725.98 = 42,977.18 : x
2. Step 2: Convert to fraction form
   78,785.88/108,725.98 = 42,977.18/x
3. Step 3: Cross multiply
   78,785.88x = 108,725.98 × 42,977.18
4. Step 4: Simplify right side
   78,785.88x = 4,672,736,013.14
5. Step 5: Solve for x
   x = 4,672,736,013.14/78,785.88
6. Step 6: Final answer
   x = 59,309.31