Finding the Fourth Proportional to 111,978.92, 154,551.06 and 64,248.08

Step by Step Solution

1. Step 1: Write the proportion equation
   111,978.92 : 154,551.06 = 64,248.08 : x
2. Step 2: Convert to fraction form
   111,978.92/154,551.06 = 64,248.08/x
3. Step 3: Cross multiply
   111,978.92x = 154,551.06 × 64,248.08
4. Step 4: Simplify right side
   111,978.92x = 9,929,608,866.96
5. Step 5: Solve for x
   x = 9,929,608,866.96/111,978.92
6. Step 6: Final answer
   x = 88,673.91