Finding the Fourth Proportional to 78,787.46, 108,726.52 and 42,977.47

Step by Step Solution

1. Step 1: Write the proportion equation
   78,787.46 : 108,726.52 = 42,977.47 : x
2. Step 2: Convert to fraction form
   78,787.46/108,726.52 = 42,977.47/x
3. Step 3: Cross multiply
   78,787.46x = 108,726.52 × 42,977.47
4. Step 4: Simplify right side
   78,787.46x = 4,672,790,751.50
5. Step 5: Solve for x
   x = 4,672,790,751.50/78,787.46
6. Step 6: Final answer
   x = 59,308.81