Finding the Fourth Proportional to 59,646.96, 89,499.60 and 42,228.72

Step by Step Solution

1. Step 1: Write the proportion equation
   59,646.96 : 89,499.60 = 42,228.72 : x
2. Step 2: Convert to fraction form
   59,646.96/89,499.60 = 42,228.72/x
3. Step 3: Cross multiply
   59,646.96x = 89,499.60 × 42,228.72
4. Step 4: Simplify right side
   59,646.96x = 3,779,453,548.51
5. Step 5: Solve for x
   x = 3,779,453,548.51/59,646.96
6. Step 6: Final answer
   x = 63,363.72