Finding the Fourth Proportional to 116,587.74, 160,894.71 and 66,289.98

Step by Step Solution

1. Step 1: Write the proportion equation
   116,587.74 : 160,894.71 = 66,289.98 : x
2. Step 2: Convert to fraction form
   116,587.74/160,894.71 = 66,289.98/x
3. Step 3: Cross multiply
   116,587.74x = 160,894.71 × 66,289.98
4. Step 4: Simplify right side
   116,587.74x = 10,665,707,108.01
5. Step 5: Solve for x
   x = 10,665,707,108.01/116,587.74
6. Step 6: Final answer
   x = 91,482.24