Finding the Fourth Proportional to 31,399,116.16, 47,116,947.84 and 13,201,993.12

Step by Step Solution

1. Step 1: Write the proportion equation
   31,399,116.16 : 47,116,947.84 = 13,201,993.12 : x
2. Step 2: Convert to fraction form
   31,399,116.16/47,116,947.84 = 13,201,993.12/x
3. Step 3: Cross multiply
   31,399,116.16x = 47,116,947.84 × 13,201,993.12
4. Step 4: Simplify right side
   31,399,116.16x = 622,037,621,219,078.88
5. Step 5: Solve for x
   x = 622,037,621,219,078.88/31,399,116.16
6. Step 6: Final answer
   x = 19,810,672.95