Finding the Fourth Proportional to 57,360.21, 79,134.96 and 42,288.69

Step by Step Solution

1. Step 1: Write the proportion equation
   57,360.21 : 79,134.96 = 42,288.69 : x
2. Step 2: Convert to fraction form
   57,360.21/79,134.96 = 42,288.69/x
3. Step 3: Cross multiply
   57,360.21x = 79,134.96 × 42,288.69
4. Step 4: Simplify right side
   57,360.21x = 3,346,513,791.60
5. Step 5: Solve for x
   x = 3,346,513,791.60/57,360.21
6. Step 6: Final answer
   x = 58,342.08