Finding the Fourth Proportional to 23,093,393.72, 31,869,883.60 and 12,780,120.16

Step by Step Solution

1. Step 1: Write the proportion equation
   23,093,393.72 : 31,869,883.60 = 12,780,120.16 : x
2. Step 2: Convert to fraction form
   23,093,393.72/31,869,883.60 = 12,780,120.16/x
3. Step 3: Cross multiply
   23,093,393.72x = 31,869,883.60 × 12,780,120.16
4. Step 4: Simplify right side
   23,093,393.72x = 407,300,941,893,213.38
5. Step 5: Solve for x
   x = 407,300,941,893,213.38/23,093,393.72
6. Step 6: Final answer
   x = 17,637,119.38