Finding the Fourth Proportional to 547,150.90, 820,611.15 and 231,618.10

Step by Step Solution

1. Step 1: Write the proportion equation
   547,150.90 : 820,611.15 = 231,618.10 : x
2. Step 2: Convert to fraction form
   547,150.90/820,611.15 = 231,618.10/x
3. Step 3: Cross multiply
   547,150.90x = 820,611.15 × 231,618.10
4. Step 4: Simplify right side
   547,150.90x = 190,068,395,401.82
5. Step 5: Solve for x
   x = 190,068,395,401.82/547,150.90
6. Step 6: Final answer
   x = 347,378.38