Finding the Fourth Proportional to 124,621.31, 171,997.15 and 79,252

Step by Step Solution

1. Step 1: Write the proportion equation
   124,621.31 : 171,997.15 = 79,252 : x
2. Step 2: Convert to fraction form
   124,621.31/171,997.15 = 79,252/x
3. Step 3: Cross multiply
   124,621.31x = 171,997.15 × 79,252
4. Step 4: Simplify right side
   124,621.31x = 13,631,118,131.80
5. Step 5: Solve for x
   x = 13,631,118,131.80/124,621.31
6. Step 6: Final answer
   x = 109,380.31