Finding the Fourth Proportional to 22,874,429.81, 31,565,774.74 and 12,420,039.91

Step by Step Solution

1. Step 1: Write the proportion equation
   22,874,429.81 : 31,565,774.74 = 12,420,039.91 : x
2. Step 2: Convert to fraction form
   22,874,429.81/31,565,774.74 = 12,420,039.91/x
3. Step 3: Cross multiply
   22,874,429.81x = 31,565,774.74 × 12,420,039.91
4. Step 4: Simplify right side
   22,874,429.81x = 392,048,182,060,869.88
5. Step 5: Solve for x
   x = 392,048,182,060,869.88/22,874,429.81
6. Step 6: Final answer
   x = 17,139,145.56