Finding the Fourth Proportional to 65,648,689.28, 98,385,004.72 and 51,093,183.68

Step by Step Solution

1. Step 1: Write the proportion equation
   65,648,689.28 : 98,385,004.72 = 51,093,183.68 : x
2. Step 2: Convert to fraction form
   65,648,689.28/98,385,004.72 = 51,093,183.68/x
3. Step 3: Cross multiply
   65,648,689.28x = 98,385,004.72 × 51,093,183.68
4. Step 4: Simplify right side
   65,648,689.28x = 5,026,803,117,516,627
5. Step 5: Solve for x
   x = 5,026,803,117,516,627/65,648,689.28
6. Step 6: Final answer
   x = 76,571,263.99