Finding the Fourth Proportional to 78,215.52, 107,919.14 and 52,769.00

Step by Step Solution

1. Step 1: Write the proportion equation
   78,215.52 : 107,919.14 = 52,769.00 : x
2. Step 2: Convert to fraction form
   78,215.52/107,919.14 = 52,769.00/x
3. Step 3: Cross multiply
   78,215.52x = 107,919.14 × 52,769.00
4. Step 4: Simplify right side
   78,215.52x = 5,694,785,104.61
5. Step 5: Solve for x
   x = 5,694,785,104.61/78,215.52
6. Step 6: Final answer
   x = 72,808.89