Finding the Fourth Proportional to 78,385.88, 108,172.83 and 42,576.49

Step by Step Solution

1. Step 1: Write the proportion equation
   78,385.88 : 108,172.83 = 42,576.49 : x
2. Step 2: Convert to fraction form
   78,385.88/108,172.83 = 42,576.49/x
3. Step 3: Cross multiply
   78,385.88x = 108,172.83 × 42,576.49
4. Step 4: Simplify right side
   78,385.88x = 4,605,619,201.88
5. Step 5: Solve for x
   x = 4,605,619,201.88/78,385.88
6. Step 6: Final answer
   x = 58,755.72