Finding the Fourth Proportional to 270,773.28, 406,224.72 and 83,784.78

Step by Step Solution

1. Step 1: Write the proportion equation
   270,773.28 : 406,224.72 = 83,784.78 : x
2. Step 2: Convert to fraction form
   270,773.28/406,224.72 = 83,784.78/x
3. Step 3: Cross multiply
   270,773.28x = 406,224.72 × 83,784.78
4. Step 4: Simplify right side
   270,773.28x = 34,035,448,795.76
5. Step 5: Solve for x
   x = 34,035,448,795.76/270,773.28
6. Step 6: Final answer
   x = 125,697.22