Finding the Fourth Proportional to 42,039,043.74, 63,053,141.85 and 13,288,085.64

Step by Step Solution

1. Step 1: Write the proportion equation
   42,039,043.74 : 63,053,141.85 = 13,288,085.64 : x
2. Step 2: Convert to fraction form
   42,039,043.74/63,053,141.85 = 13,288,085.64/x
3. Step 3: Cross multiply
   42,039,043.74x = 63,053,141.85 × 13,288,085.64
4. Step 4: Simplify right side
   42,039,043.74x = 837,855,548,773,868.12
5. Step 5: Solve for x
   x = 837,855,548,773,868.12/42,039,043.74
6. Step 6: Final answer
   x = 19,930,414.07