Finding the Fourth Proportional to 691,314,356.37, 954,087,744.20 and 423,567,876.72

Step by Step Solution

1. Step 1: Write the proportion equation
   691,314,356.37 : 954,087,744.20 = 423,567,876.72 : x
2. Step 2: Convert to fraction form
   691,314,356.37/954,087,744.20 = 423,567,876.72/x
3. Step 3: Cross multiply
   691,314,356.37x = 954,087,744.20 × 423,567,876.72
4. Step 4: Simplify right side
   691,314,356.37x = 404,120,920,013,250,688
5. Step 5: Solve for x
   x = 404,120,920,013,250,688/691,314,356.37
6. Step 6: Final answer
   x = 584,568,968.21