Finding the Fourth Proportional to 31,158,153.21, 42,996,927 and 17,220,030.42

Step by Step Solution

1. Step 1: Write the proportion equation
   31,158,153.21 : 42,996,927 = 17,220,030.42 : x
2. Step 2: Convert to fraction form
   31,158,153.21/42,996,927 = 17,220,030.42/x
3. Step 3: Cross multiply
   31,158,153.21x = 42,996,927 × 17,220,030.42
4. Step 4: Simplify right side
   31,158,153.21x = 740,408,390,906,519.38
5. Step 5: Solve for x
   x = 740,408,390,906,519.38/31,158,153.21
6. Step 6: Final answer
   x = 23,762,910.01