Finding the Fourth Proportional to 42,373,521.12, 63,560,872.17 and 12,081,384.12

Step by Step Solution

1. Step 1: Write the proportion equation
   42,373,521.12 : 63,560,872.17 = 12,081,384.12 : x
2. Step 2: Convert to fraction form
   42,373,521.12/63,560,872.17 = 12,081,384.12/x
3. Step 3: Cross multiply
   42,373,521.12x = 63,560,872.17 × 12,081,384.12
4. Step 4: Simplify right side
   42,373,521.12x = 767,903,311,687,987.88
5. Step 5: Solve for x
   x = 767,903,311,687,987.88/42,373,521.12
6. Step 6: Final answer
   x = 18,122,244.54