Finding the Fourth Proportional to 388,969.32, 583,107.69 and 152,476.86

Step by Step Solution

1. Step 1: Write the proportion equation
   388,969.32 : 583,107.69 = 152,476.86 : x
2. Step 2: Convert to fraction form
   388,969.32/583,107.69 = 152,476.86/x
3. Step 3: Cross multiply
   388,969.32x = 583,107.69 × 152,476.86
4. Step 4: Simplify right side
   388,969.32x = 88,910,432,371.50
5. Step 5: Solve for x
   x = 88,910,432,371.50/388,969.32
6. Step 6: Final answer
   x = 228,579.55