Finding the Fourth Proportional to 31,892,243.06, 47,856,931.29 and 13,447,031.39

Step by Step Solution

1. Step 1: Write the proportion equation
   31,892,243.06 : 47,856,931.29 = 13,447,031.39 : x
2. Step 2: Convert to fraction form
   31,892,243.06/47,856,931.29 = 13,447,031.39/x
3. Step 3: Cross multiply
   31,892,243.06x = 47,856,931.29 × 13,447,031.39
4. Step 4: Simplify right side
   31,892,243.06x = 643,533,657,046,418.50
5. Step 5: Solve for x
   x = 643,533,657,046,418.50/31,892,243.06
6. Step 6: Final answer
   x = 20,178,375.53