Finding the Fourth Proportional to 114,987.88, 158,681.46 and 64,000

Step by Step Solution

1. Step 1: Write the proportion equation
   114,987.88 : 158,681.46 = 64,000 : x
2. Step 2: Convert to fraction form
   114,987.88/158,681.46 = 64,000/x
3. Step 3: Cross multiply
   114,987.88x = 158,681.46 × 64,000
4. Step 4: Simplify right side
   114,987.88x = 10,155,613,440
5. Step 5: Solve for x
   x = 10,155,613,440/114,987.88
6. Step 6: Final answer
   x = 88,318.99