Finding the Fourth Proportional to 158,602.72, 218,851.52 and 90,624.10

Step by Step Solution

1. Step 1: Write the proportion equation
   158,602.72 : 218,851.52 = 90,624.10 : x
2. Step 2: Convert to fraction form
   158,602.72/218,851.52 = 90,624.10/x
3. Step 3: Cross multiply
   158,602.72x = 218,851.52 × 90,624.10
4. Step 4: Simplify right side
   158,602.72x = 19,833,222,033.63
5. Step 5: Solve for x
   x = 19,833,222,033.63/158,602.72
6. Step 6: Final answer
   x = 125,049.70