Finding the Fourth Proportional to 116,864.98, 161,290.95 and 86,607.83

Step by Step Solution

1. Step 1: Write the proportion equation
   116,864.98 : 161,290.95 = 86,607.83 : x
2. Step 2: Convert to fraction form
   116,864.98/161,290.95 = 86,607.83/x
3. Step 3: Cross multiply
   116,864.98x = 161,290.95 × 86,607.83
4. Step 4: Simplify right side
   116,864.98x = 13,969,059,256.59
5. Step 5: Solve for x
   x = 13,969,059,256.59/116,864.98
6. Step 6: Final answer
   x = 119,531.61