Finding the Fourth Proportional to 124,796.71, 172,199.55 and 71,082.78

Step by Step Solution

1. Step 1: Write the proportion equation
   124,796.71 : 172,199.55 = 71,082.78 : x
2. Step 2: Convert to fraction form
   124,796.71/172,199.55 = 71,082.78/x
3. Step 3: Cross multiply
   124,796.71x = 172,199.55 × 71,082.78
4. Step 4: Simplify right side
   124,796.71x = 12,240,422,728.75
5. Step 5: Solve for x
   x = 12,240,422,728.75/124,796.71
6. Step 6: Final answer
   x = 98,082.90