Finding the Fourth Proportional to 64,814.01, 89,436.08 and 36,131.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,814.01 : 89,436.08 = 36,131.50 : x
2. Step 2: Convert to fraction form
   64,814.01/89,436.08 = 36,131.50/x
3. Step 3: Cross multiply
   64,814.01x = 89,436.08 × 36,131.50
4. Step 4: Simplify right side
   64,814.01x = 3,231,459,926.64
5. Step 5: Solve for x
   x = 3,231,459,926.64/64,814.01
6. Step 6: Final answer
   x = 49,857.43