Finding the Fourth Proportional to 114,987, 158,696.64 and 64,695.72

Step by Step Solution

1. Step 1: Write the proportion equation
   114,987 : 158,696.64 = 64,695.72 : x
2. Step 2: Convert to fraction form
   114,987/158,696.64 = 64,695.72/x
3. Step 3: Cross multiply
   114,987x = 158,696.64 × 64,695.72
4. Step 4: Simplify right side
   114,987x = 10,266,993,386.38
5. Step 5: Solve for x
   x = 10,266,993,386.38/114,987
6. Step 6: Final answer
   x = 89,288.30