Finding the Fourth Proportional to 116,409.60, 160,658.56 and 64,731.85

Step by Step Solution

1. Step 1: Write the proportion equation
   116,409.60 : 160,658.56 = 64,731.85 : x
2. Step 2: Convert to fraction form
   116,409.60/160,658.56 = 64,731.85/x
3. Step 3: Cross multiply
   116,409.60x = 160,658.56 × 64,731.85
4. Step 4: Simplify right side
   116,409.60x = 10,399,724,842.01
5. Step 5: Solve for x
   x = 10,399,724,842.01/116,409.60
6. Step 6: Final answer
   x = 89,337.35