Finding the Fourth Proportional to 60,757.28, 90,985.26 and 42,056

Step by Step Solution

1. Step 1: Write the proportion equation
   60,757.28 : 90,985.26 = 42,056 : x
2. Step 2: Convert to fraction form
   60,757.28/90,985.26 = 42,056/x
3. Step 3: Cross multiply
   60,757.28x = 90,985.26 × 42,056
4. Step 4: Simplify right side
   60,757.28x = 3,826,476,094.56
5. Step 5: Solve for x
   x = 3,826,476,094.56/60,757.28
6. Step 6: Final answer
   x = 62,979.71