Finding the Fourth Proportional to 124,861.82, 172,300.52 and 76,471.88

Step by Step Solution

1. Step 1: Write the proportion equation
   124,861.82 : 172,300.52 = 76,471.88 : x
2. Step 2: Convert to fraction form
   124,861.82/172,300.52 = 76,471.88/x
3. Step 3: Cross multiply
   124,861.82x = 172,300.52 × 76,471.88
4. Step 4: Simplify right side
   124,861.82x = 13,176,144,307.02
5. Step 5: Solve for x
   x = 13,176,144,307.02/124,861.82
6. Step 6: Final answer
   x = 105,525.81