Finding the Fourth Proportional to 39,432,540.80, 59,154,453.52 and 12,141,142.72

Step by Step Solution

1. Step 1: Write the proportion equation
   39,432,540.80 : 59,154,453.52 = 12,141,142.72 : x
2. Step 2: Convert to fraction form
   39,432,540.80/59,154,453.52 = 12,141,142.72/x
3. Step 3: Cross multiply
   39,432,540.80x = 59,154,453.52 × 12,141,142.72
4. Step 4: Simplify right side
   39,432,540.80x = 718,202,662,709,926.50
5. Step 5: Solve for x
   x = 718,202,662,709,926.50/39,432,540.80
6. Step 6: Final answer
   x = 18,213,451.33