Finding the Fourth Proportional to 107,978.33, 148,929.76 and 79,288.99

Step by Step Solution

1. Step 1: Write the proportion equation
   107,978.33 : 148,929.76 = 79,288.99 : x
2. Step 2: Convert to fraction form
   107,978.33/148,929.76 = 79,288.99/x
3. Step 3: Cross multiply
   107,978.33x = 148,929.76 × 79,288.99
4. Step 4: Simplify right side
   107,978.33x = 11,808,490,251.34
5. Step 5: Solve for x
   x = 11,808,490,251.34/107,978.33
6. Step 6: Final answer
   x = 109,359.82