Finding the Fourth Proportional to 112,877.94, 155,655.27 and 78,874.02

Step by Step Solution

1. Step 1: Write the proportion equation
   112,877.94 : 155,655.27 = 78,874.02 : x
2. Step 2: Convert to fraction form
   112,877.94/155,655.27 = 78,874.02/x
3. Step 3: Cross multiply
   112,877.94x = 155,655.27 × 78,874.02
4. Step 4: Simplify right side
   112,877.94x = 12,277,156,879.09
5. Step 5: Solve for x
   x = 12,277,156,879.09/112,877.94
6. Step 6: Final answer
   x = 108,764.89