Finding the Fourth Proportional to 307,320.06, 460,680.72 and 138,882.78

Step by Step Solution

1. Step 1: Write the proportion equation
   307,320.06 : 460,680.72 = 138,882.78 : x
2. Step 2: Convert to fraction form
   307,320.06/460,680.72 = 138,882.78/x
3. Step 3: Cross multiply
   307,320.06x = 460,680.72 × 138,882.78
4. Step 4: Simplify right side
   307,320.06x = 63,980,619,086.00
5. Step 5: Solve for x
   x = 63,980,619,086.00/307,320.06
6. Step 6: Final answer
   x = 208,188.88