Finding the Fourth Proportional to 124,535.72, 171,858.42 and 70,820.72

Step by Step Solution

1. Step 1: Write the proportion equation
   124,535.72 : 171,858.42 = 70,820.72 : x
2. Step 2: Convert to fraction form
   124,535.72/171,858.42 = 70,820.72/x
3. Step 3: Cross multiply
   124,535.72x = 171,858.42 × 70,820.72
4. Step 4: Simplify right side
   124,535.72x = 12,171,137,042.46
5. Step 5: Solve for x
   x = 12,171,137,042.46/124,535.72
6. Step 6: Final answer
   x = 97,732.10