Finding the Fourth Proportional to 151,567.72, 209,139.30 and 84,500.20

Step by Step Solution

1. Step 1: Write the proportion equation
   151,567.72 : 209,139.30 = 84,500.20 : x
2. Step 2: Convert to fraction form
   151,567.72/209,139.30 = 84,500.20/x
3. Step 3: Cross multiply
   151,567.72x = 209,139.30 × 84,500.20
4. Step 4: Simplify right side
   151,567.72x = 17,672,312,677.86
5. Step 5: Solve for x
   x = 17,672,312,677.86/151,567.72
6. Step 6: Final answer
   x = 116,596.81