Finding the Fourth Proportional to 356,870.40, 535,404.42 and 164,803.50

Step by Step Solution

1. Step 1: Write the proportion equation
   356,870.40 : 535,404.42 = 164,803.50 : x
2. Step 2: Convert to fraction form
   356,870.40/535,404.42 = 164,803.50/x
3. Step 3: Cross multiply
   356,870.40x = 535,404.42 × 164,803.50
4. Step 4: Simplify right side
   356,870.40x = 88,236,522,331.47
5. Step 5: Solve for x
   x = 88,236,522,331.47/356,870.40
6. Step 6: Final answer
   x = 247,250.89