Finding the Fourth Proportional to 59,770.42, 89,670.75 and 42,922.78

Step by Step Solution

1. Step 1: Write the proportion equation
   59,770.42 : 89,670.75 = 42,922.78 : x
2. Step 2: Convert to fraction form
   59,770.42/89,670.75 = 42,922.78/x
3. Step 3: Cross multiply
   59,770.42x = 89,670.75 × 42,922.78
4. Step 4: Simplify right side
   59,770.42x = 3,848,917,874.69
5. Step 5: Solve for x
   x = 3,848,917,874.69/59,770.42
6. Step 6: Final answer
   x = 64,395.03