Finding the Fourth Proportional to 283,620.72, 425,426.28 and 83,940

Step by Step Solution

1. Step 1: Write the proportion equation
   283,620.72 : 425,426.28 = 83,940 : x
2. Step 2: Convert to fraction form
   283,620.72/425,426.28 = 83,940/x
3. Step 3: Cross multiply
   283,620.72x = 425,426.28 × 83,940
4. Step 4: Simplify right side
   283,620.72x = 35,710,281,943.20
5. Step 5: Solve for x
   x = 35,710,281,943.20/283,620.72
6. Step 6: Final answer
   x = 125,908.58