Finding the Fourth Proportional to 100.51, 137.89 and 94.30

Step by Step Solution

1. Step 1: Write the proportion equation
   100.51 : 137.89 = 94.30 : x
2. Step 2: Convert to fraction form
   100.51/137.89 = 94.30/x
3. Step 3: Cross multiply
   100.51x = 137.89 × 94.30
4. Step 4: Simplify right side
   100.51x = 13,003.03
5. Step 5: Solve for x
   x = 13,003.03/100.51
6. Step 6: Final answer
   x = 129.37