Finding the Fourth Proportional to 172,109.34, 237,442.88 and 99,498.87

Step by Step Solution

1. Step 1: Write the proportion equation
   172,109.34 : 237,442.88 = 99,498.87 : x
2. Step 2: Convert to fraction form
   172,109.34/237,442.88 = 99,498.87/x
3. Step 3: Cross multiply
   172,109.34x = 237,442.88 × 99,498.87
4. Step 4: Simplify right side
   172,109.34x = 23,625,298,249.55
5. Step 5: Solve for x
   x = 23,625,298,249.55/172,109.34
6. Step 6: Final answer
   x = 137,269.12