Finding the Fourth Proportional to 116,280.65, 160,475.28 and 64,603.98

Step by Step Solution

1. Step 1: Write the proportion equation
   116,280.65 : 160,475.28 = 64,603.98 : x
2. Step 2: Convert to fraction form
   116,280.65/160,475.28 = 64,603.98/x
3. Step 3: Cross multiply
   116,280.65x = 160,475.28 × 64,603.98
4. Step 4: Simplify right side
   116,280.65x = 10,367,341,946.17
5. Step 5: Solve for x
   x = 10,367,341,946.17/116,280.65
6. Step 6: Final answer
   x = 89,157.93