Finding the Fourth Proportional to 78,385.74, 108,173.12 and 42,576.45

Step by Step Solution

1. Step 1: Write the proportion equation
   78,385.74 : 108,173.12 = 42,576.45 : x
2. Step 2: Convert to fraction form
   78,385.74/108,173.12 = 42,576.45/x
3. Step 3: Cross multiply
   78,385.74x = 108,173.12 × 42,576.45
4. Step 4: Simplify right side
   78,385.74x = 4,605,627,435.02
5. Step 5: Solve for x
   x = 4,605,627,435.02/78,385.74
6. Step 6: Final answer
   x = 58,755.93