Finding the Fourth Proportional to 91,332.25, 137,026.06 and 64,729.72

Step by Step Solution

1. Step 1: Write the proportion equation
   91,332.25 : 137,026.06 = 64,729.72 : x
2. Step 2: Convert to fraction form
   91,332.25/137,026.06 = 64,729.72/x
3. Step 3: Cross multiply
   91,332.25x = 137,026.06 × 64,729.72
4. Step 4: Simplify right side
   91,332.25x = 8,869,658,496.50
5. Step 5: Solve for x
   x = 8,869,658,496.50/91,332.25
6. Step 6: Final answer
   x = 97,114.20