Finding the Fourth Proportional to 559,025,564.72, 771,420,182.18 and 308,116,149.12

Step by Step Solution

1. Step 1: Write the proportion equation
   559,025,564.72 : 771,420,182.18 = 308,116,149.12 : x
2. Step 2: Convert to fraction form
   559,025,564.72/771,420,182.18 = 308,116,149.12/x
3. Step 3: Cross multiply
   559,025,564.72x = 771,420,182.18 × 308,116,149.12
4. Step 4: Simplify right side
   559,025,564.72x = 237,687,015,885,209,856
5. Step 5: Solve for x
   x = 237,687,015,885,209,856/559,025,564.72
6. Step 6: Final answer
   x = 425,180,941.42