Finding the Fourth Proportional to 116,402.86, 160,649.22 and 65,415.52

Step by Step Solution

1. Step 1: Write the proportion equation
   116,402.86 : 160,649.22 = 65,415.52 : x
2. Step 2: Convert to fraction form
   116,402.86/160,649.22 = 65,415.52/x
3. Step 3: Cross multiply
   116,402.86x = 160,649.22 × 65,415.52
4. Step 4: Simplify right side
   116,402.86x = 10,508,952,263.89
5. Step 5: Solve for x
   x = 10,508,952,263.89/116,402.86
6. Step 6: Final answer
   x = 90,280.88