Finding the Fourth Proportional to 31,099,388.16, 42,918,066.30 and 16,971,484.99

Step by Step Solution

1. Step 1: Write the proportion equation
   31,099,388.16 : 42,918,066.30 = 16,971,484.99 : x
2. Step 2: Convert to fraction form
   31,099,388.16/42,918,066.30 = 16,971,484.99/x
3. Step 3: Cross multiply
   31,099,388.16x = 42,918,066.30 × 16,971,484.99
4. Step 4: Simplify right side
   31,099,388.16x = 728,383,317,951,629.50
5. Step 5: Solve for x
   x = 728,383,317,951,629.50/31,099,388.16
6. Step 6: Final answer
   x = 23,421,146.24