Finding the Fourth Proportional to 31,384,885.43, 47,058,071.60 and 12,193,238.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,384,885.43 : 47,058,071.60 = 12,193,238.72 : x
2. Step 2: Convert to fraction form
   31,384,885.43/47,058,071.60 = 12,193,238.72/x
3. Step 3: Cross multiply
   31,384,885.43x = 47,058,071.60 × 12,193,238.72
4. Step 4: Simplify right side
   31,384,885.43x = 573,790,300,425,395.75
5. Step 5: Solve for x
   x = 573,790,300,425,395.75/31,384,885.43
6. Step 6: Final answer
   x = 18,282,376.78