Finding the Fourth Proportional to 118,860.72, 164,029.12 and 65,148

Step by Step Solution

1. Step 1: Write the proportion equation
   118,860.72 : 164,029.12 = 65,148 : x
2. Step 2: Convert to fraction form
   118,860.72/164,029.12 = 65,148/x
3. Step 3: Cross multiply
   118,860.72x = 164,029.12 × 65,148
4. Step 4: Simplify right side
   118,860.72x = 10,686,169,109.76
5. Step 5: Solve for x
   x = 10,686,169,109.76/118,860.72
6. Step 6: Final answer
   x = 89,904.97