Finding the Fourth Proportional to 64,536.72, 89,061.30 and 37,310.76

Step by Step Solution

1. Step 1: Write the proportion equation
   64,536.72 : 89,061.30 = 37,310.76 : x
2. Step 2: Convert to fraction form
   64,536.72/89,061.30 = 37,310.76/x
3. Step 3: Cross multiply
   64,536.72x = 89,061.30 × 37,310.76
4. Step 4: Simplify right side
   64,536.72x = 3,322,944,789.59
5. Step 5: Solve for x
   x = 3,322,944,789.59/64,536.72
6. Step 6: Final answer
   x = 51,489.21