Finding the Fourth Proportional to 124,884.89, 172,356.89 and 81,900.53

Step by Step Solution

1. Step 1: Write the proportion equation
   124,884.89 : 172,356.89 = 81,900.53 : x
2. Step 2: Convert to fraction form
   124,884.89/172,356.89 = 81,900.53/x
3. Step 3: Cross multiply
   124,884.89x = 172,356.89 × 81,900.53
4. Step 4: Simplify right side
   124,884.89x = 14,116,119,368.86
5. Step 5: Solve for x
   x = 14,116,119,368.86/124,884.89
6. Step 6: Final answer
   x = 113,033.05