Finding the Fourth Proportional to 338,870.53, 508,290.42 and 149,280.24

Step by Step Solution

1. Step 1: Write the proportion equation
   338,870.53 : 508,290.42 = 149,280.24 : x
2. Step 2: Convert to fraction form
   338,870.53/508,290.42 = 149,280.24/x
3. Step 3: Cross multiply
   338,870.53x = 508,290.42 × 149,280.24
4. Step 4: Simplify right side
   338,870.53x = 75,877,715,887.30
5. Step 5: Solve for x
   x = 75,877,715,887.30/338,870.53
6. Step 6: Final answer
   x = 223,913.59