Finding the Fourth Proportional to 21,335,109.73, 31,999,058.06 and 5,978,867.78

Step by Step Solution

1. Step 1: Write the proportion equation
   21,335,109.73 : 31,999,058.06 = 5,978,867.78 : x
2. Step 2: Convert to fraction form
   21,335,109.73/31,999,058.06 = 5,978,867.78/x
3. Step 3: Cross multiply
   21,335,109.73x = 31,999,058.06 × 5,978,867.78
4. Step 4: Simplify right side
   21,335,109.73x = 191,318,137,225,283.31
5. Step 5: Solve for x
   x = 191,318,137,225,283.31/21,335,109.73
6. Step 6: Final answer
   x = 8,967,290.99