Finding the Fourth Proportional to 173,856.10, 260,978.55 and 134,587.30

Step by Step Solution

1. Step 1: Write the proportion equation
   173,856.10 : 260,978.55 = 134,587.30 : x
2. Step 2: Convert to fraction form
   173,856.10/260,978.55 = 134,587.30/x
3. Step 3: Cross multiply
   173,856.10x = 260,978.55 × 134,587.30
4. Step 4: Simplify right side
   173,856.10x = 35,124,398,402.42
5. Step 5: Solve for x
   x = 35,124,398,402.42/173,856.10
6. Step 6: Final answer
   x = 202,031.44