Finding the Fourth Proportional to 116,758.32, 161,127.72 and 66,457.68

Step by Step Solution

1. Step 1: Write the proportion equation
   116,758.32 : 161,127.72 = 66,457.68 : x
2. Step 2: Convert to fraction form
   116,758.32/161,127.72 = 66,457.68/x
3. Step 3: Cross multiply
   116,758.32x = 161,127.72 × 66,457.68
4. Step 4: Simplify right side
   116,758.32x = 10,708,174,454.89
5. Step 5: Solve for x
   x = 10,708,174,454.89/116,758.32
6. Step 6: Final answer
   x = 91,712.30