Finding the Fourth Proportional to 124,103.72, 171,322.62 and 76,397.96

Step by Step Solution

1. Step 1: Write the proportion equation
   124,103.72 : 171,322.62 = 76,397.96 : x
2. Step 2: Convert to fraction form
   124,103.72/171,322.62 = 76,397.96/x
3. Step 3: Cross multiply
   124,103.72x = 171,322.62 × 76,397.96
4. Step 4: Simplify right side
   124,103.72x = 13,088,698,669.86
5. Step 5: Solve for x
   x = 13,088,698,669.86/124,103.72
6. Step 6: Final answer
   x = 105,465.80