Finding the Fourth Proportional to 778,723.50, 1,074,638.47 and 429,864.00

Step by Step Solution

1. Step 1: Write the proportion equation
   778,723.50 : 1,074,638.47 = 429,864.00 : x
2. Step 2: Convert to fraction form
   778,723.50/1,074,638.47 = 429,864.00/x
3. Step 3: Cross multiply
   778,723.50x = 1,074,638.47 × 429,864.00
4. Step 4: Simplify right side
   778,723.50x = 461,948,385,760.53
5. Step 5: Solve for x
   x = 461,948,385,760.53/778,723.50
6. Step 6: Final answer
   x = 593,212.34