Finding the Fourth Proportional to 162,061.29, 223,655.89 and 90,442.51

Step by Step Solution

1. Step 1: Write the proportion equation
   162,061.29 : 223,655.89 = 90,442.51 : x
2. Step 2: Convert to fraction form
   162,061.29/223,655.89 = 90,442.51/x
3. Step 3: Cross multiply
   162,061.29x = 223,655.89 × 90,442.51
4. Step 4: Simplify right side
   162,061.29x = 20,228,000,067.88
5. Step 5: Solve for x
   x = 20,228,000,067.88/162,061.29
6. Step 6: Final answer
   x = 124,816.98