Finding the Fourth Proportional to 49,818,329.72, 74,724,836.16 and 13,426,136.18

Step by Step Solution

1. Step 1: Write the proportion equation
   49,818,329.72 : 74,724,836.16 = 13,426,136.18 : x
2. Step 2: Convert to fraction form
   49,818,329.72/74,724,836.16 = 13,426,136.18/x
3. Step 3: Cross multiply
   49,818,329.72x = 74,724,836.16 × 13,426,136.18
4. Step 4: Simplify right side
   49,818,329.72x = 1,003,265,826,312,348.25
5. Step 5: Solve for x
   x = 1,003,265,826,312,348.25/49,818,329.72
6. Step 6: Final answer
   x = 20,138,487.82