Finding the Fourth Proportional to 64,784.40, 89,404.32 and 36,492.72

Step by Step Solution

1. Step 1: Write the proportion equation
   64,784.40 : 89,404.32 = 36,492.72 : x
2. Step 2: Convert to fraction form
   64,784.40/89,404.32 = 36,492.72/x
3. Step 3: Cross multiply
   64,784.40x = 89,404.32 × 36,492.72
4. Step 4: Simplify right side
   64,784.40x = 3,262,606,816.55
5. Step 5: Solve for x
   x = 3,262,606,816.55/64,784.40
6. Step 6: Final answer
   x = 50,360.99