Finding the Fourth Proportional to 124,992.72, 172,488.72 and 67,630.77

Step by Step Solution

1. Step 1: Write the proportion equation
   124,992.72 : 172,488.72 = 67,630.77 : x
2. Step 2: Convert to fraction form
   124,992.72/172,488.72 = 67,630.77/x
3. Step 3: Cross multiply
   124,992.72x = 172,488.72 × 67,630.77
4. Step 4: Simplify right side
   124,992.72x = 11,665,545,118.02
5. Step 5: Solve for x
   x = 11,665,545,118.02/124,992.72
6. Step 6: Final answer
   x = 93,329.80