Finding the Fourth Proportional to 435,997,260.72, 654,122,124.72 and 129,296,754.72

Step by Step Solution

1. Step 1: Write the proportion equation
   435,997,260.72 : 654,122,124.72 = 129,296,754.72 : x
2. Step 2: Convert to fraction form
   435,997,260.72/654,122,124.72 = 129,296,754.72/x
3. Step 3: Cross multiply
   435,997,260.72x = 654,122,124.72 × 129,296,754.72
4. Step 4: Simplify right side
   435,997,260.72x = 84,575,867,916,847,088
5. Step 5: Solve for x
   x = 84,575,867,916,847,088/435,997,260.72
6. Step 6: Final answer
   x = 193,982,567.18