Finding the Fourth Proportional to 1,530,624,826.72, 2,112,329,151.60 and 861,613,041.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,530,624,826.72 : 2,112,329,151.60 = 861,613,041.16 : x
2. Step 2: Convert to fraction form
   1,530,624,826.72/2,112,329,151.60 = 861,613,041.16/x
3. Step 3: Cross multiply
   1,530,624,826.72x = 2,112,329,151.60 × 861,613,041.16
4. Step 4: Simplify right side
   1,530,624,826.72x = 1,820,010,344,240,998,400
5. Step 5: Solve for x
   x = 1,820,010,344,240,998,400/1,530,624,826.72
6. Step 6: Final answer
   x = 1,189,063,650.65