Finding the Fourth Proportional to 31,108,842.59, 42,918,229.28 and 19,486,172.03

Step by Step Solution

1. Step 1: Write the proportion equation
   31,108,842.59 : 42,918,229.28 = 19,486,172.03 : x
2. Step 2: Convert to fraction form
   31,108,842.59/42,918,229.28 = 19,486,172.03/x
3. Step 3: Cross multiply
   31,108,842.59x = 42,918,229.28 × 19,486,172.03
4. Step 4: Simplify right side
   31,108,842.59x = 836,311,998,807,187.25
5. Step 5: Solve for x
   x = 836,311,998,807,187.25/31,108,842.59
6. Step 6: Final answer
   x = 26,883,417.36