Finding the Fourth Proportional to 59,488.56, 89,372.28 and 56,126.16

Step by Step Solution

1. Step 1: Write the proportion equation
   59,488.56 : 89,372.28 = 56,126.16 : x
2. Step 2: Convert to fraction form
   59,488.56/89,372.28 = 56,126.16/x
3. Step 3: Cross multiply
   59,488.56x = 89,372.28 × 56,126.16
4. Step 4: Simplify right side
   59,488.56x = 5,016,122,886.84
5. Step 5: Solve for x
   x = 5,016,122,886.84/59,488.56
6. Step 6: Final answer
   x = 84,320.80