Finding the Fourth Proportional to 31,616,039.16, 43,616,773.98 and 21,165,422.28

Step by Step Solution

1. Step 1: Write the proportion equation
   31,616,039.16 : 43,616,773.98 = 21,165,422.28 : x
2. Step 2: Convert to fraction form
   31,616,039.16/43,616,773.98 = 21,165,422.28/x
3. Step 3: Cross multiply
   31,616,039.16x = 43,616,773.98 × 21,165,422.28
4. Step 4: Simplify right side
   31,616,039.16x = 923,167,439,778,016.25
5. Step 5: Solve for x
   x = 923,167,439,778,016.25/31,616,039.16
6. Step 6: Final answer
   x = 29,199,338.83