Finding the Fourth Proportional to 106,906.32, 147,652.56 and 72,856.08

Step by Step Solution

1. Step 1: Write the proportion equation
   106,906.32 : 147,652.56 = 72,856.08 : x
2. Step 2: Convert to fraction form
   106,906.32/147,652.56 = 72,856.08/x
3. Step 3: Cross multiply
   106,906.32x = 147,652.56 × 72,856.08
4. Step 4: Simplify right side
   106,906.32x = 10,757,386,723.56
5. Step 5: Solve for x
   x = 10,757,386,723.56/106,906.32
6. Step 6: Final answer
   x = 100,624.42