Finding the Fourth Proportional to 23,680,506.42, 32,679,098.55 and 12,815,490.42

Step by Step Solution

1. Step 1: Write the proportion equation
   23,680,506.42 : 32,679,098.55 = 12,815,490.42 : x
2. Step 2: Convert to fraction form
   23,680,506.42/32,679,098.55 = 12,815,490.42/x
3. Step 3: Cross multiply
   23,680,506.42x = 32,679,098.55 × 12,815,490.42
4. Step 4: Simplify right side
   23,680,506.42x = 418,798,674,401,760.88
5. Step 5: Solve for x
   x = 418,798,674,401,760.88/23,680,506.42
6. Step 6: Final answer
   x = 17,685,376.61