Finding the Fourth Proportional to 89,084.32, 122,877.84 and 57,202.72

Step by Step Solution

1. Step 1: Write the proportion equation
   89,084.32 : 122,877.84 = 57,202.72 : x
2. Step 2: Convert to fraction form
   89,084.32/122,877.84 = 57,202.72/x
3. Step 3: Cross multiply
   89,084.32x = 122,877.84 × 57,202.72
4. Step 4: Simplify right side
   89,084.32x = 7,028,946,675.72
5. Step 5: Solve for x
   x = 7,028,946,675.72/89,084.32
6. Step 6: Final answer
   x = 78,902.18