Finding the Fourth Proportional to 116,431.06, 160,688.19 and 64,753.31

Step by Step Solution

1. Step 1: Write the proportion equation
   116,431.06 : 160,688.19 = 64,753.31 : x
2. Step 2: Convert to fraction form
   116,431.06/160,688.19 = 64,753.31/x
3. Step 3: Cross multiply
   116,431.06x = 160,688.19 × 64,753.31
4. Step 4: Simplify right side
   116,431.06x = 10,405,092,507.93
5. Step 5: Solve for x
   x = 10,405,092,507.93/116,431.06
6. Step 6: Final answer
   x = 89,366.98