Finding the Fourth Proportional to 152,078,806.10, 228,118,209.15 and 143,120,854.10

Step by Step Solution

1. Step 1: Write the proportion equation
   152,078,806.10 : 228,118,209.15 = 143,120,854.10 : x
2. Step 2: Convert to fraction form
   152,078,806.10/228,118,209.15 = 143,120,854.10/x
3. Step 3: Cross multiply
   152,078,806.10x = 228,118,209.15 × 143,120,854.10
4. Step 4: Simplify right side
   152,078,806.10x = 32,648,472,929,310,436
5. Step 5: Solve for x
   x = 32,648,472,929,310,436/152,078,806.10
6. Step 6: Final answer
   x = 214,681,281.15