Finding the Fourth Proportional to 107,643.90, 148,532.78 and 64,614.27

Step by Step Solution

1. Step 1: Write the proportion equation
   107,643.90 : 148,532.78 = 64,614.27 : x
2. Step 2: Convert to fraction form
   107,643.90/148,532.78 = 64,614.27/x
3. Step 3: Cross multiply
   107,643.90x = 148,532.78 × 64,614.27
4. Step 4: Simplify right side
   107,643.90x = 9,597,337,150.77
5. Step 5: Solve for x
   x = 9,597,337,150.77/107,643.90
6. Step 6: Final answer
   x = 89,158.21