Finding the Fourth Proportional to 116,438.06, 160,683.10 and 65,459.30

Step by Step Solution

1. Step 1: Write the proportion equation
   116,438.06 : 160,683.10 = 65,459.30 : x
2. Step 2: Convert to fraction form
   116,438.06/160,683.10 = 65,459.30/x
3. Step 3: Cross multiply
   116,438.06x = 160,683.10 × 65,459.30
4. Step 4: Simplify right side
   116,438.06x = 10,518,202,280.77
5. Step 5: Solve for x
   x = 10,518,202,280.77/116,438.06
6. Step 6: Final answer
   x = 90,333.02