Finding the Fourth Proportional to 443,248,049.32, 611,743,068.30 and 255,072,478.12

Step by Step Solution

1. Step 1: Write the proportion equation
   443,248,049.32 : 611,743,068.30 = 255,072,478.12 : x
2. Step 2: Convert to fraction form
   443,248,049.32/611,743,068.30 = 255,072,478.12/x
3. Step 3: Cross multiply
   443,248,049.32x = 611,743,068.30 × 255,072,478.12
4. Step 4: Simplify right side
   443,248,049.32x = 156,038,820,404,013,408
5. Step 5: Solve for x
   x = 156,038,820,404,013,408/443,248,049.32
6. Step 6: Final answer
   x = 352,034,985.02