Finding the Fourth Proportional to 41,445,123.20, 62,142,801.60 and 21,289,731.20

Step by Step Solution

1. Step 1: Write the proportion equation
   41,445,123.20 : 62,142,801.60 = 21,289,731.20 : x
2. Step 2: Convert to fraction form
   41,445,123.20/62,142,801.60 = 21,289,731.20/x
3. Step 3: Cross multiply
   41,445,123.20x = 62,142,801.60 × 21,289,731.20
4. Step 4: Simplify right side
   41,445,123.20x = 1,323,003,542,078,930
5. Step 5: Solve for x
   x = 1,323,003,542,078,930/41,445,123.20
6. Step 6: Final answer
   x = 31,921,814.68