Finding the Fourth Proportional to 116,970.94, 161,435.69 and 65,994.13

Step by Step Solution

1. Step 1: Write the proportion equation
   116,970.94 : 161,435.69 = 65,994.13 : x
2. Step 2: Convert to fraction form
   116,970.94/161,435.69 = 65,994.13/x
3. Step 3: Cross multiply
   116,970.94x = 161,435.69 × 65,994.13
4. Step 4: Simplify right side
   116,970.94x = 10,653,807,508.91
5. Step 5: Solve for x
   x = 10,653,807,508.91/116,970.94
6. Step 6: Final answer
   x = 91,080.81