Finding the Fourth Proportional to 81,655.84, 122,368.89 and 64,941.69

Step by Step Solution

1. Step 1: Write the proportion equation
   81,655.84 : 122,368.89 = 64,941.69 : x
2. Step 2: Convert to fraction form
   81,655.84/122,368.89 = 64,941.69/x
3. Step 3: Cross multiply
   81,655.84x = 122,368.89 × 64,941.69
4. Step 4: Simplify right side
   81,655.84x = 7,946,843,222.44
5. Step 5: Solve for x
   x = 7,946,843,222.44/81,655.84
6. Step 6: Final answer
   x = 97,321.18