Finding the Fourth Proportional to 118,849.56, 164,012.63 and 65,136.57

Step by Step Solution

1. Step 1: Write the proportion equation
   118,849.56 : 164,012.63 = 65,136.57 : x
2. Step 2: Convert to fraction form
   118,849.56/164,012.63 = 65,136.57/x
3. Step 3: Cross multiply
   118,849.56x = 164,012.63 × 65,136.57
4. Step 4: Simplify right side
   118,849.56x = 10,683,219,829.20
5. Step 5: Solve for x
   x = 10,683,219,829.20/118,849.56
6. Step 6: Final answer
   x = 89,888.59