Finding the Fourth Proportional to 476,888.48, 715,443.52 and 139,915.52

Step by Step Solution

1. Step 1: Write the proportion equation
   476,888.48 : 715,443.52 = 139,915.52 : x
2. Step 2: Convert to fraction form
   476,888.48/715,443.52 = 139,915.52/x
3. Step 3: Cross multiply
   476,888.48x = 715,443.52 × 139,915.52
4. Step 4: Simplify right side
   476,888.48x = 100,101,652,131.43
5. Step 5: Solve for x
   x = 100,101,652,131.43/476,888.48
6. Step 6: Final answer
   x = 209,905.79