Finding the Fourth Proportional to 93,002.58, 128,126.61 and 64,659.06

Step by Step Solution

1. Step 1: Write the proportion equation
   93,002.58 : 128,126.61 = 64,659.06 : x
2. Step 2: Convert to fraction form
   93,002.58/128,126.61 = 64,659.06/x
3. Step 3: Cross multiply
   93,002.58x = 128,126.61 × 64,659.06
4. Step 4: Simplify right side
   93,002.58x = 8,284,546,163.59
5. Step 5: Solve for x
   x = 8,284,546,163.59/93,002.58
6. Step 6: Final answer
   x = 89,078.67