Finding the Fourth Proportional to 39,905,019.33, 55,068,902.31 and 21,570,304.83

Step by Step Solution

1. Step 1: Write the proportion equation
   39,905,019.33 : 55,068,902.31 = 21,570,304.83 : x
2. Step 2: Convert to fraction form
   39,905,019.33/55,068,902.31 = 21,570,304.83/x
3. Step 3: Cross multiply
   39,905,019.33x = 55,068,902.31 × 21,570,304.83
4. Step 4: Simplify right side
   39,905,019.33x = 1,187,853,009,480,191
5. Step 5: Solve for x
   x = 1,187,853,009,480,191/39,905,019.33
6. Step 6: Final answer
   x = 29,767,007.49