Finding the Fourth Proportional to 22,616,496.72, 31,229,614.71 and 20,975,342.76

Step by Step Solution

1. Step 1: Write the proportion equation
   22,616,496.72 : 31,229,614.71 = 20,975,342.76 : x
2. Step 2: Convert to fraction form
   22,616,496.72/31,229,614.71 = 20,975,342.76/x
3. Step 3: Cross multiply
   22,616,496.72x = 31,229,614.71 × 20,975,342.76
4. Step 4: Simplify right side
   22,616,496.72x = 655,051,872,804,988.12
5. Step 5: Solve for x
   x = 655,051,872,804,988.12/22,616,496.72
6. Step 6: Final answer
   x = 28,963,454.46