Finding the Fourth Proportional to 151,663.11, 209,294.47 and 83,684.31

Step by Step Solution

1. Step 1: Write the proportion equation
   151,663.11 : 209,294.47 = 83,684.31 : x
2. Step 2: Convert to fraction form
   151,663.11/209,294.47 = 83,684.31/x
3. Step 3: Cross multiply
   151,663.11x = 209,294.47 × 83,684.31
4. Step 4: Simplify right side
   151,663.11x = 17,514,663,099.55
5. Step 5: Solve for x
   x = 17,514,663,099.55/151,663.11
6. Step 6: Final answer
   x = 115,484.00