Finding the Fourth Proportional to 21,077,779.15, 29,058,729.89 and 14,789,763.01

Step by Step Solution

1. Step 1: Write the proportion equation
   21,077,779.15 : 29,058,729.89 = 14,789,763.01 : x
2. Step 2: Convert to fraction form
   21,077,779.15/29,058,729.89 = 14,789,763.01/x
3. Step 3: Cross multiply
   21,077,779.15x = 29,058,729.89 × 14,789,763.01
4. Step 4: Simplify right side
   21,077,779.15x = 429,771,728,225,460.94
5. Step 5: Solve for x
   x = 429,771,728,225,460.94/21,077,779.15
6. Step 6: Final answer
   x = 20,389,801.28