Finding the Fourth Proportional to 65,105.63, 97,505.32 and 31,721.07

Step by Step Solution

1. Step 1: Write the proportion equation
   65,105.63 : 97,505.32 = 31,721.07 : x
2. Step 2: Convert to fraction form
   65,105.63/97,505.32 = 31,721.07/x
3. Step 3: Cross multiply
   65,105.63x = 97,505.32 × 31,721.07
4. Step 4: Simplify right side
   65,105.63x = 3,092,973,081.09
5. Step 5: Solve for x
   x = 3,092,973,081.09/65,105.63
6. Step 6: Final answer
   x = 47,507.00