Finding the Fourth Proportional to 124,536.72, 171,859.80 and 70,821.72

Step by Step Solution

1. Step 1: Write the proportion equation
   124,536.72 : 171,859.80 = 70,821.72 : x
2. Step 2: Convert to fraction form
   124,536.72/171,859.80 = 70,821.72/x
3. Step 3: Cross multiply
   124,536.72x = 171,859.80 × 70,821.72
4. Step 4: Simplify right side
   124,536.72x = 12,171,406,634.86
5. Step 5: Solve for x
   x = 12,171,406,634.86/124,536.72
6. Step 6: Final answer
   x = 97,733.48