Finding the Fourth Proportional to 42,390,401.10, 63,593,896.05 and 18,129,281.10

Step by Step Solution

1. Step 1: Write the proportion equation
   42,390,401.10 : 63,593,896.05 = 18,129,281.10 : x
2. Step 2: Convert to fraction form
   42,390,401.10/63,593,896.05 = 18,129,281.10/x
3. Step 3: Cross multiply
   42,390,401.10x = 63,593,896.05 × 18,129,281.10
4. Step 4: Simplify right side
   42,390,401.10x = 1,152,911,617,734,629.75
5. Step 5: Solve for x
   x = 1,152,911,617,734,629.75/42,390,401.10
6. Step 6: Final answer
   x = 27,197,468.95