Finding the Fourth Proportional to 42,023,768.43, 63,037,584.50 and 12,875,519.91

Step by Step Solution

1. Step 1: Write the proportion equation
   42,023,768.43 : 63,037,584.50 = 12,875,519.91 : x
2. Step 2: Convert to fraction form
   42,023,768.43/63,037,584.50 = 12,875,519.91/x
3. Step 3: Cross multiply
   42,023,768.43x = 63,037,584.50 × 12,875,519.91
4. Step 4: Simplify right side
   42,023,768.43x = 811,641,674,243,679.75
5. Step 5: Solve for x
   x = 811,641,674,243,679.75/42,023,768.43
6. Step 6: Final answer
   x = 19,313,871.76