Finding the Fourth Proportional to 233,078,499.06, 321,648,280.20 and 128,656,542.71

Step by Step Solution

1. Step 1: Write the proportion equation
   233,078,499.06 : 321,648,280.20 = 128,656,542.71 : x
2. Step 2: Convert to fraction form
   233,078,499.06/321,648,280.20 = 128,656,542.71/x
3. Step 3: Cross multiply
   233,078,499.06x = 321,648,280.20 × 128,656,542.71
4. Step 4: Simplify right side
   233,078,499.06x = 41,382,155,697,541,104
5. Step 5: Solve for x
   x = 41,382,155,697,541,104/233,078,499.06
6. Step 6: Final answer
   x = 177,546,002.16