Finding the Fourth Proportional to 569,256,648.72, 785,574,847.24 and 308,496,264.72

Step by Step Solution

1. Step 1: Write the proportion equation
   569,256,648.72 : 785,574,847.24 = 308,496,264.72 : x
2. Step 2: Convert to fraction form
   569,256,648.72/785,574,847.24 = 308,496,264.72/x
3. Step 3: Cross multiply
   569,256,648.72x = 785,574,847.24 × 308,496,264.72
4. Step 4: Simplify right side
   569,256,648.72x = 242,346,906,031,524,640
5. Step 5: Solve for x
   x = 242,346,906,031,524,640/569,256,648.72
6. Step 6: Final answer
   x = 425,725,209.49