Finding the Fourth Proportional to 89,902.72, 134,170.48 and 79,938.46

Step by Step Solution

1. Step 1: Write the proportion equation
   89,902.72 : 134,170.48 = 79,938.46 : x
2. Step 2: Convert to fraction form
   89,902.72/134,170.48 = 79,938.46/x
3. Step 3: Cross multiply
   89,902.72x = 134,170.48 × 79,938.46
4. Step 4: Simplify right side
   89,902.72x = 10,725,381,548.66
5. Step 5: Solve for x
   x = 10,725,381,548.66/89,902.72
6. Step 6: Final answer
   x = 119,299.86