Finding the Fourth Proportional to 64,553.64, 89,068.23 and 37,680.72

Step by Step Solution

1. Step 1: Write the proportion equation
   64,553.64 : 89,068.23 = 37,680.72 : x
2. Step 2: Convert to fraction form
   64,553.64/89,068.23 = 37,680.72/x
3. Step 3: Cross multiply
   64,553.64x = 89,068.23 × 37,680.72
4. Step 4: Simplify right side
   64,553.64x = 3,356,155,035.53
5. Step 5: Solve for x
   x = 3,356,155,035.53/64,553.64
6. Step 6: Final answer
   x = 51,990.17