Finding the Fourth Proportional to 23,131,376.48, 31,921,488.42 and 12,818,271.80

Step by Step Solution

1. Step 1: Write the proportion equation
   23,131,376.48 : 31,921,488.42 = 12,818,271.80 : x
2. Step 2: Convert to fraction form
   23,131,376.48/31,921,488.42 = 12,818,271.80/x
3. Step 3: Cross multiply
   23,131,376.48x = 31,921,488.42 × 12,818,271.80
4. Step 4: Simplify right side
   23,131,376.48x = 409,178,314,828,112.62
5. Step 5: Solve for x
   x = 409,178,314,828,112.62/23,131,376.48
6. Step 6: Final answer
   x = 17,689,319.75