Finding the Fourth Proportional to 151,500.60, 209,086.38 and 91,090.92

Step by Step Solution

1. Step 1: Write the proportion equation
   151,500.60 : 209,086.38 = 91,090.92 : x
2. Step 2: Convert to fraction form
   151,500.60/209,086.38 = 91,090.92/x
3. Step 3: Cross multiply
   151,500.60x = 209,086.38 × 91,090.92
4. Step 4: Simplify right side
   151,500.60x = 19,045,870,713.67
5. Step 5: Solve for x
   x = 19,045,870,713.67/151,500.60
6. Step 6: Final answer
   x = 125,714.82