Finding the Fourth Proportional to 114,987.60, 158,679 and 64,676.88

Step by Step Solution

1. Step 1: Write the proportion equation
   114,987.60 : 158,679 = 64,676.88 : x
2. Step 2: Convert to fraction form
   114,987.60/158,679 = 64,676.88/x
3. Step 3: Cross multiply
   114,987.60x = 158,679 × 64,676.88
4. Step 4: Simplify right side
   114,987.60x = 10,262,862,641.52
5. Step 5: Solve for x
   x = 10,262,862,641.52/114,987.60
6. Step 6: Final answer
   x = 89,251.91