Finding the Fourth Proportional to 162,419.76, 242,453.34 and 140,374.80

Step by Step Solution

1. Step 1: Write the proportion equation
   162,419.76 : 242,453.34 = 140,374.80 : x
2. Step 2: Convert to fraction form
   162,419.76/242,453.34 = 140,374.80/x
3. Step 3: Cross multiply
   162,419.76x = 242,453.34 × 140,374.80
4. Step 4: Simplify right side
   162,419.76x = 34,034,339,111.83
5. Step 5: Solve for x
   x = 34,034,339,111.83/162,419.76
6. Step 6: Final answer
   x = 209,545.56