Finding the Fourth Proportional to 116,725.34, 161,078.76 and 71,399.99

Step by Step Solution

1. Step 1: Write the proportion equation
   116,725.34 : 161,078.76 = 71,399.99 : x
2. Step 2: Convert to fraction form
   116,725.34/161,078.76 = 71,399.99/x
3. Step 3: Cross multiply
   116,725.34x = 161,078.76 × 71,399.99
4. Step 4: Simplify right side
   116,725.34x = 11,501,021,047.82
5. Step 5: Solve for x
   x = 11,501,021,047.82/116,725.34
6. Step 6: Final answer
   x = 98,530.63