Finding the Fourth Proportional to 116,488, 160,753.62 and 66,196.72

Step by Step Solution

1. Step 1: Write the proportion equation
   116,488 : 160,753.62 = 66,196.72 : x
2. Step 2: Convert to fraction form
   116,488/160,753.62 = 66,196.72/x
3. Step 3: Cross multiply
   116,488x = 160,753.62 × 66,196.72
4. Step 4: Simplify right side
   116,488x = 10,641,362,372.13
5. Step 5: Solve for x
   x = 10,641,362,372.13/116,488
6. Step 6: Final answer
   x = 91,351.58