Finding the Fourth Proportional to 107,784.32, 148,688.88 and 72,022.28

Step by Step Solution

1. Step 1: Write the proportion equation
   107,784.32 : 148,688.88 = 72,022.28 : x
2. Step 2: Convert to fraction form
   107,784.32/148,688.88 = 72,022.28/x
3. Step 3: Cross multiply
   107,784.32x = 148,688.88 × 72,022.28
4. Step 4: Simplify right side
   107,784.32x = 10,708,912,148.25
5. Step 5: Solve for x
   x = 10,708,912,148.25/107,784.32
6. Step 6: Final answer
   x = 99,355.01