Finding the Fourth Proportional to 136,092.15, 204,111.50 and 129,340.94

Step by Step Solution

1. Step 1: Write the proportion equation
   136,092.15 : 204,111.50 = 129,340.94 : x
2. Step 2: Convert to fraction form
   136,092.15/204,111.50 = 129,340.94/x
3. Step 3: Cross multiply
   136,092.15x = 204,111.50 × 129,340.94
4. Step 4: Simplify right side
   136,092.15x = 26,399,971,607.55
5. Step 5: Solve for x
   x = 26,399,971,607.55/136,092.15
6. Step 6: Final answer
   x = 193,986.00