Finding the Fourth Proportional to 569,256,662.72, 785,574,866.56 and 308,496,278.72

Step by Step Solution

1. Step 1: Write the proportion equation
   569,256,662.72 : 785,574,866.56 = 308,496,278.72 : x
2. Step 2: Convert to fraction form
   569,256,662.72/785,574,866.56 = 308,496,278.72/x
3. Step 3: Cross multiply
   569,256,662.72x = 785,574,866.56 × 308,496,278.72
4. Step 4: Simplify right side
   569,256,662.72x = 242,346,922,989,720,576
5. Step 5: Solve for x
   x = 242,346,922,989,720,576/569,256,662.72
6. Step 6: Final answer
   x = 425,725,228.81