Finding the Fourth Proportional to 89,085.78, 122,931.90 and 48,793.02

Step by Step Solution

1. Step 1: Write the proportion equation
   89,085.78 : 122,931.90 = 48,793.02 : x
2. Step 2: Convert to fraction form
   89,085.78/122,931.90 = 48,793.02/x
3. Step 3: Cross multiply
   89,085.78x = 122,931.90 × 48,793.02
4. Step 4: Simplify right side
   89,085.78x = 5,998,218,655.34
5. Step 5: Solve for x
   x = 5,998,218,655.34/89,085.78
6. Step 6: Final answer
   x = 67,330.82