Finding the Fourth Proportional to 209,402.01, 314,047.53 and 91,046.43

Step by Step Solution

1. Step 1: Write the proportion equation
   209,402.01 : 314,047.53 = 91,046.43 : x
2. Step 2: Convert to fraction form
   209,402.01/314,047.53 = 91,046.43/x
3. Step 3: Cross multiply
   209,402.01x = 314,047.53 × 91,046.43
4. Step 4: Simplify right side
   209,402.01x = 28,592,906,456.82
5. Step 5: Solve for x
   x = 28,592,906,456.82/209,402.01
6. Step 6: Final answer
   x = 136,545.52