Finding the Fourth Proportional to 443,824,811.13, 612,329,901.84 and 258,146,411.61

Step by Step Solution

1. Step 1: Write the proportion equation
   443,824,811.13 : 612,329,901.84 = 258,146,411.61 : x
2. Step 2: Convert to fraction form
   443,824,811.13/612,329,901.84 = 258,146,411.61/x
3. Step 3: Cross multiply
   443,824,811.13x = 612,329,901.84 × 258,146,411.61
4. Step 4: Simplify right side
   443,824,811.13x = 158,070,766,881,499,552
5. Step 5: Solve for x
   x = 158,070,766,881,499,552/443,824,811.13
6. Step 6: Final answer
   x = 356,155,768.94