Finding the Fourth Proportional to 124,262,108.58, 171,443,708.88 and 72,040,722.12

Step by Step Solution

1. Step 1: Write the proportion equation
   124,262,108.58 : 171,443,708.88 = 72,040,722.12 : x
2. Step 2: Convert to fraction form
   124,262,108.58/171,443,708.88 = 72,040,722.12/x
3. Step 3: Cross multiply
   124,262,108.58x = 171,443,708.88 × 72,040,722.12
4. Step 4: Simplify right side
   124,262,108.58x = 12,350,928,590,646,256
5. Step 5: Solve for x
   x = 12,350,928,590,646,256/124,262,108.58
6. Step 6: Final answer
   x = 99,394,165.54