Finding the Fourth Proportional to 552,498.89, 829,191.20 and 286,335.50

Step by Step Solution

1. Step 1: Write the proportion equation
   552,498.89 : 829,191.20 = 286,335.50 : x
2. Step 2: Convert to fraction form
   552,498.89/829,191.20 = 286,335.50/x
3. Step 3: Cross multiply
   552,498.89x = 829,191.20 × 286,335.50
4. Step 4: Simplify right side
   552,498.89x = 237,426,871,269.97
5. Step 5: Solve for x
   x = 237,426,871,269.97/552,498.89
6. Step 6: Final answer
   x = 429,732.76