Finding the Fourth Proportional to 128,062,152.83, 176,746,697.33 and 78,529,788.56

Step by Step Solution

1. Step 1: Write the proportion equation
   128,062,152.83 : 176,746,697.33 = 78,529,788.56 : x
2. Step 2: Convert to fraction form
   128,062,152.83/176,746,697.33 = 78,529,788.56/x
3. Step 3: Cross multiply
   128,062,152.83x = 176,746,697.33 × 78,529,788.56
4. Step 4: Simplify right side
   128,062,152.83x = 13,879,880,770,052,434
5. Step 5: Solve for x
   x = 13,879,880,770,052,434/128,062,152.83
6. Step 6: Final answer
   x = 108,383,940.63