Finding the Fourth Proportional to 562,077.59, 775,685.61 and 307,428.76

Step by Step Solution

1. Step 1: Write the proportion equation
   562,077.59 : 775,685.61 = 307,428.76 : x
2. Step 2: Convert to fraction form
   562,077.59/775,685.61 = 307,428.76/x
3. Step 3: Cross multiply
   562,077.59x = 775,685.61 × 307,428.76
4. Step 4: Simplify right side
   562,077.59x = 238,468,059,816.57
5. Step 5: Solve for x
   x = 238,468,059,816.57/562,077.59
6. Step 6: Final answer
   x = 424,261.82