Finding the Fourth Proportional to 620,369,443.76, 856,107,245.40 and 341,910,302.72

Step by Step Solution

1. Step 1: Write the proportion equation
   620,369,443.76 : 856,107,245.40 = 341,910,302.72 : x
2. Step 2: Convert to fraction form
   620,369,443.76/856,107,245.40 = 341,910,302.72/x
3. Step 3: Cross multiply
   620,369,443.76x = 856,107,245.40 × 341,910,302.72
4. Step 4: Simplify right side
   620,369,443.76x = 292,711,887,435,499,328
5. Step 5: Solve for x
   x = 292,711,887,435,499,328/620,369,443.76
6. Step 6: Final answer
   x = 471,834,791.96