Finding the Fourth Proportional to 42,399,741.79, 63,586,129.83 and 13,639,182.76

Step by Step Solution

1. Step 1: Write the proportion equation
   42,399,741.79 : 63,586,129.83 = 13,639,182.76 : x
2. Step 2: Convert to fraction form
   42,399,741.79/63,586,129.83 = 13,639,182.76/x
3. Step 3: Cross multiply
   42,399,741.79x = 63,586,129.83 × 13,639,182.76
4. Step 4: Simplify right side
   42,399,741.79x = 867,262,845,752,457.75
5. Step 5: Solve for x
   x = 867,262,845,752,457.75/42,399,741.79
6. Step 6: Final answer
   x = 20,454,436.96