Finding the Fourth Proportional to 116,478.03, 160,737.90 and 65,490.80

Step by Step Solution

1. Step 1: Write the proportion equation
   116,478.03 : 160,737.90 = 65,490.80 : x
2. Step 2: Convert to fraction form
   116,478.03/160,737.90 = 65,490.80/x
3. Step 3: Cross multiply
   116,478.03x = 160,737.90 × 65,490.80
4. Step 4: Simplify right side
   116,478.03x = 10,526,854,063.16
5. Step 5: Solve for x
   x = 10,526,854,063.16/116,478.03
6. Step 6: Final answer
   x = 90,376.31