Finding the Fourth Proportional to 78,363.40, 108,141.16 and 42,553.12

Step by Step Solution

1. Step 1: Write the proportion equation
   78,363.40 : 108,141.16 = 42,553.12 : x
2. Step 2: Convert to fraction form
   78,363.40/108,141.16 = 42,553.12/x
3. Step 3: Cross multiply
   78,363.40x = 108,141.16 × 42,553.12
4. Step 4: Simplify right side
   78,363.40x = 4,601,743,758.42
5. Step 5: Solve for x
   x = 4,601,743,758.42/78,363.40
6. Step 6: Final answer
   x = 58,723.13