Finding the Fourth Proportional to 329,810.98, 455,139.30 and 186,567.98

Step by Step Solution

1. Step 1: Write the proportion equation
   329,810.98 : 455,139.30 = 186,567.98 : x
2. Step 2: Convert to fraction form
   329,810.98/455,139.30 = 186,567.98/x
3. Step 3: Cross multiply
   329,810.98x = 455,139.30 × 186,567.98
4. Step 4: Simplify right side
   329,810.98x = 84,914,419,819.61
5. Step 5: Solve for x
   x = 84,914,419,819.61/329,810.98
6. Step 6: Final answer
   x = 257,463.90