Finding the Fourth Proportional to 114,988.72, 158,675.88 and 64,678

Step by Step Solution

1. Step 1: Write the proportion equation
   114,988.72 : 158,675.88 = 64,678 : x
2. Step 2: Convert to fraction form
   114,988.72/158,675.88 = 64,678/x
3. Step 3: Cross multiply
   114,988.72x = 158,675.88 × 64,678
4. Step 4: Simplify right side
   114,988.72x = 10,262,838,566.64
5. Step 5: Solve for x
   x = 10,262,838,566.64/114,988.72
6. Step 6: Final answer
   x = 89,250.83