Finding the Fourth Proportional to 118,878.79, 164,051.96 and 65,166.07

Step by Step Solution

1. Step 1: Write the proportion equation
   118,878.79 : 164,051.96 = 65,166.07 : x
2. Step 2: Convert to fraction form
   118,878.79/164,051.96 = 65,166.07/x
3. Step 3: Cross multiply
   118,878.79x = 164,051.96 × 65,166.07
4. Step 4: Simplify right side
   118,878.79x = 10,690,621,509.00
5. Step 5: Solve for x
   x = 10,690,621,509.00/118,878.79
6. Step 6: Final answer
   x = 89,928.75