Finding the Fourth Proportional to 233,078,521.56, 321,648,310.98 and 128,656,565.34

Step by Step Solution

1. Step 1: Write the proportion equation
   233,078,521.56 : 321,648,310.98 = 128,656,565.34 : x
2. Step 2: Convert to fraction form
   233,078,521.56/321,648,310.98 = 128,656,565.34/x
3. Step 3: Cross multiply
   233,078,521.56x = 321,648,310.98 × 128,656,565.34
4. Step 4: Simplify right side
   233,078,521.56x = 41,382,166,938,099,016
5. Step 5: Solve for x
   x = 41,382,166,938,099,016/233,078,521.56
6. Step 6: Final answer
   x = 177,546,033.25