Finding the Fourth Proportional to 93.06, 139.71 and 78.03

Step by Step Solution

1. Step 1: Write the proportion equation
   93.06 : 139.71 = 78.03 : x
2. Step 2: Convert to fraction form
   93.06/139.71 = 78.03/x
3. Step 3: Cross multiply
   93.06x = 139.71 × 78.03
4. Step 4: Simplify right side
   93.06x = 10,901.57
5. Step 5: Solve for x
   x = 10,901.57/93.06
6. Step 6: Final answer
   x = 117.15