Finding the Fourth Proportional to 118,915.11, 164,101.61 and 65,200.01

Step by Step Solution

1. Step 1: Write the proportion equation
   118,915.11 : 164,101.61 = 65,200.01 : x
2. Step 2: Convert to fraction form
   118,915.11/164,101.61 = 65,200.01/x
3. Step 3: Cross multiply
   118,915.11x = 164,101.61 × 65,200.01
4. Step 4: Simplify right side
   118,915.11x = 10,699,425,466.51
5. Step 5: Solve for x
   x = 10,699,425,466.51/118,915.11
6. Step 6: Final answer
   x = 89,975.32