Finding the Fourth Proportional to 151,913, 209,657.76 and 91,514.14

Step by Step Solution

1. Step 1: Write the proportion equation
   151,913 : 209,657.76 = 91,514.14 : x
2. Step 2: Convert to fraction form
   151,913/209,657.76 = 91,514.14/x
3. Step 3: Cross multiply
   151,913x = 209,657.76 × 91,514.14
4. Step 4: Simplify right side
   151,913x = 19,186,649,600.73
5. Step 5: Solve for x
   x = 19,186,649,600.73/151,913
6. Step 6: Final answer
   x = 126,300.25