Finding the Fourth Proportional to 107,978.08, 149,022.72 and 63,266.08

Step by Step Solution

1. Step 1: Write the proportion equation
   107,978.08 : 149,022.72 = 63,266.08 : x
2. Step 2: Convert to fraction form
   107,978.08/149,022.72 = 63,266.08/x
3. Step 3: Cross multiply
   107,978.08x = 149,022.72 × 63,266.08
4. Step 4: Simplify right side
   107,978.08x = 9,428,083,325.34
5. Step 5: Solve for x
   x = 9,428,083,325.34/107,978.08
6. Step 6: Final answer
   x = 87,314.79