Finding the Fourth Proportional to 109,493.88, 164,548.62 and 65,128.68

Step by Step Solution

1. Step 1: Write the proportion equation
   109,493.88 : 164,548.62 = 65,128.68 : x
2. Step 2: Convert to fraction form
   109,493.88/164,548.62 = 65,128.68/x
3. Step 3: Cross multiply
   109,493.88x = 164,548.62 × 65,128.68
4. Step 4: Simplify right side
   109,493.88x = 10,716,834,416.42
5. Step 5: Solve for x
   x = 10,716,834,416.42/109,493.88
6. Step 6: Final answer
   x = 97,876.10