Finding the Fourth Proportional to 91,325.64, 137,016.15 and 64,723.07

Step by Step Solution

1. Step 1: Write the proportion equation
   91,325.64 : 137,016.15 = 64,723.07 : x
2. Step 2: Convert to fraction form
   91,325.64/137,016.15 = 64,723.07/x
3. Step 3: Cross multiply
   91,325.64x = 137,016.15 × 64,723.07
4. Step 4: Simplify right side
   91,325.64x = 8,868,105,182.50
5. Step 5: Solve for x
   x = 8,868,105,182.50/91,325.64
6. Step 6: Final answer
   x = 97,104.22