Finding the Fourth Proportional to 151,761.92, 209,431.76 and 83,778.98

Step by Step Solution

1. Step 1: Write the proportion equation
   151,761.92 : 209,431.76 = 83,778.98 : x
2. Step 2: Convert to fraction form
   151,761.92/209,431.76 = 83,778.98/x
3. Step 3: Cross multiply
   151,761.92x = 209,431.76 × 83,778.98
4. Step 4: Simplify right side
   151,761.92x = 17,545,980,004.69
5. Step 5: Solve for x
   x = 17,545,980,004.69/151,761.92
6. Step 6: Final answer
   x = 115,615.17