Finding the Fourth Proportional to 172,531.51, 258,423.01 and 83,598.50

Step by Step Solution

1. Step 1: Write the proportion equation
   172,531.51 : 258,423.01 = 83,598.50 : x
2. Step 2: Convert to fraction form
   172,531.51/258,423.01 = 83,598.50/x
3. Step 3: Cross multiply
   172,531.51x = 258,423.01 × 83,598.50
4. Step 4: Simplify right side
   172,531.51x = 21,603,776,438.55
5. Step 5: Solve for x
   x = 21,603,776,438.55/172,531.51
6. Step 6: Final answer
   x = 125,216.41