Finding the Fourth Proportional to 402,100.59, 554,430.02 and 299,948.71

Step by Step Solution

1. Step 1: Write the proportion equation
   402,100.59 : 554,430.02 = 299,948.71 : x
2. Step 2: Convert to fraction form
   402,100.59/554,430.02 = 299,948.71/x
3. Step 3: Cross multiply
   402,100.59x = 554,430.02 × 299,948.71
4. Step 4: Simplify right side
   402,100.59x = 166,300,569,284.27
5. Step 5: Solve for x
   x = 166,300,569,284.27/402,100.59
6. Step 6: Final answer
   x = 413,579.52