Finding the Fourth Proportional to 78,892.38, 118,061.55 and 67,931.26

Step by Step Solution

1. Step 1: Write the proportion equation
   78,892.38 : 118,061.55 = 67,931.26 : x
2. Step 2: Convert to fraction form
   78,892.38/118,061.55 = 67,931.26/x
3. Step 3: Cross multiply
   78,892.38x = 118,061.55 × 67,931.26
4. Step 4: Simplify right side
   78,892.38x = 8,020,069,553.90
5. Step 5: Solve for x
   x = 8,020,069,553.90/78,892.38
6. Step 6: Final answer
   x = 101,658.35