Finding the Fourth Proportional to 118,846.72, 164,005.86 and 65,130.60

Step by Step Solution

1. Step 1: Write the proportion equation
   118,846.72 : 164,005.86 = 65,130.60 : x
2. Step 2: Convert to fraction form
   118,846.72/164,005.86 = 65,130.60/x
3. Step 3: Cross multiply
   118,846.72x = 164,005.86 × 65,130.60
4. Step 4: Simplify right side
   118,846.72x = 10,681,800,065.32
5. Step 5: Solve for x
   x = 10,681,800,065.32/118,846.72
6. Step 6: Final answer
   x = 89,878.80