Finding the Fourth Proportional to 107,019.17, 147,687.54 and 64,569.50

Step by Step Solution

1. Step 1: Write the proportion equation
   107,019.17 : 147,687.54 = 64,569.50 : x
2. Step 2: Convert to fraction form
   107,019.17/147,687.54 = 64,569.50/x
3. Step 3: Cross multiply
   107,019.17x = 147,687.54 × 64,569.50
4. Step 4: Simplify right side
   107,019.17x = 9,536,110,614.03
5. Step 5: Solve for x
   x = 9,536,110,614.03/107,019.17
6. Step 6: Final answer
   x = 89,106.56