Finding the Fourth Proportional to 31,607.72, 43,627.34 and 19,663.93

Step by Step Solution

1. Step 1: Write the proportion equation
   31,607.72 : 43,627.34 = 19,663.93 : x
2. Step 2: Convert to fraction form
   31,607.72/43,627.34 = 19,663.93/x
3. Step 3: Cross multiply
   31,607.72x = 43,627.34 × 19,663.93
4. Step 4: Simplify right side
   31,607.72x = 857,884,959.85
5. Step 5: Solve for x
   x = 857,884,959.85/31,607.72
6. Step 6: Final answer
   x = 27,141.63