Finding the Fourth Proportional to 136,144.94, 187,728.57 and 93,131.51

Step by Step Solution

1. Step 1: Write the proportion equation
   136,144.94 : 187,728.57 = 93,131.51 : x
2. Step 2: Convert to fraction form
   136,144.94/187,728.57 = 93,131.51/x
3. Step 3: Cross multiply
   136,144.94x = 187,728.57 × 93,131.51
4. Step 4: Simplify right side
   136,144.94x = 17,483,444,255.60
5. Step 5: Solve for x
   x = 17,483,444,255.60/136,144.94
6. Step 6: Final answer
   x = 128,417.88