Finding the Fourth Proportional to 72,505,089.15, 108,756,568.86 and 17,917,673.21

Step by Step Solution

1. Step 1: Write the proportion equation
   72,505,089.15 : 108,756,568.86 = 17,917,673.21 : x
2. Step 2: Convert to fraction form
   72,505,089.15/108,756,568.86 = 17,917,673.21/x
3. Step 3: Cross multiply
   72,505,089.15x = 108,756,568.86 × 17,917,673.21
4. Step 4: Simplify right side
   72,505,089.15x = 1,948,664,659,730,559.25
5. Step 5: Solve for x
   x = 1,948,664,659,730,559.25/72,505,089.15
6. Step 6: Final answer
   x = 26,876,246.65