Finding the Fourth Proportional to 70.69, 105.42 and 59.93

Step by Step Solution

1. Step 1: Write the proportion equation
   70.69 : 105.42 = 59.93 : x
2. Step 2: Convert to fraction form
   70.69/105.42 = 59.93/x
3. Step 3: Cross multiply
   70.69x = 105.42 × 59.93
4. Step 4: Simplify right side
   70.69x = 6,317.82
5. Step 5: Solve for x
   x = 6,317.82/70.69
6. Step 6: Final answer
   x = 89.37