Finding the Fourth Proportional to 172,117.56, 257,991.76 and 83,248.82

Step by Step Solution

1. Step 1: Write the proportion equation
   172,117.56 : 257,991.76 = 83,248.82 : x
2. Step 2: Convert to fraction form
   172,117.56/257,991.76 = 83,248.82/x
3. Step 3: Cross multiply
   172,117.56x = 257,991.76 × 83,248.82
4. Step 4: Simplify right side
   172,117.56x = 21,477,509,589.72
5. Step 5: Solve for x
   x = 21,477,509,589.72/172,117.56
6. Step 6: Final answer
   x = 124,783.95