Finding the Fourth Proportional to 78,359.58, 108,133.43 and 42,548.85

Step by Step Solution

1. Step 1: Write the proportion equation
   78,359.58 : 108,133.43 = 42,548.85 : x
2. Step 2: Convert to fraction form
   78,359.58/108,133.43 = 42,548.85/x
3. Step 3: Cross multiply
   78,359.58x = 108,133.43 × 42,548.85
4. Step 4: Simplify right side
   78,359.58x = 4,600,952,880.31
5. Step 5: Solve for x
   x = 4,600,952,880.31/78,359.58
6. Step 6: Final answer
   x = 58,715.90