Finding the Fourth Proportional to 64,591.56, 89,099.88 and 40,677.12

Step by Step Solution

1. Step 1: Write the proportion equation
   64,591.56 : 89,099.88 = 40,677.12 : x
2. Step 2: Convert to fraction form
   64,591.56/89,099.88 = 40,677.12/x
3. Step 3: Cross multiply
   64,591.56x = 89,099.88 × 40,677.12
4. Step 4: Simplify right side
   64,591.56x = 3,624,326,510.75
5. Step 5: Solve for x
   x = 3,624,326,510.75/64,591.56
6. Step 6: Final answer
   x = 56,111.46