Finding the Fourth Proportional to 158,641.73, 218,801.86 and 98,245.91

Step by Step Solution

1. Step 1: Write the proportion equation
   158,641.73 : 218,801.86 = 98,245.91 : x
2. Step 2: Convert to fraction form
   158,641.73/218,801.86 = 98,245.91/x
3. Step 3: Cross multiply
   158,641.73x = 218,801.86 × 98,245.91
4. Step 4: Simplify right side
   158,641.73x = 21,496,386,505.77
5. Step 5: Solve for x
   x = 21,496,386,505.77/158,641.73
6. Step 6: Final answer
   x = 135,502.72