Finding the Fourth Proportional to 92,061.95, 137,420.83 and 78,998.27

Step by Step Solution

1. Step 1: Write the proportion equation
   92,061.95 : 137,420.83 = 78,998.27 : x
2. Step 2: Convert to fraction form
   92,061.95/137,420.83 = 78,998.27/x
3. Step 3: Cross multiply
   92,061.95x = 137,420.83 × 78,998.27
4. Step 4: Simplify right side
   92,061.95x = 10,856,007,243.61
5. Step 5: Solve for x
   x = 10,856,007,243.61/92,061.95
6. Step 6: Final answer
   x = 117,920.68