Finding the Fourth Proportional to 78,342.16, 108,113.52 and 42,532.20

Step by Step Solution

1. Step 1: Write the proportion equation
   78,342.16 : 108,113.52 = 42,532.20 : x
2. Step 2: Convert to fraction form
   78,342.16/108,113.52 = 42,532.20/x
3. Step 3: Cross multiply
   78,342.16x = 108,113.52 × 42,532.20
4. Step 4: Simplify right side
   78,342.16x = 4,598,305,855.34
5. Step 5: Solve for x
   x = 4,598,305,855.34/78,342.16
6. Step 6: Final answer
   x = 58,695.16