Finding the Fourth Proportional to 59,507.60, 89,088.60 and 57,779.60

Step by Step Solution

1. Step 1: Write the proportion equation
   59,507.60 : 89,088.60 = 57,779.60 : x
2. Step 2: Convert to fraction form
   59,507.60/89,088.60 = 57,779.60/x
3. Step 3: Cross multiply
   59,507.60x = 89,088.60 × 57,779.60
4. Step 4: Simplify right side
   59,507.60x = 5,147,503,672.56
5. Step 5: Solve for x
   x = 5,147,503,672.56/59,507.60
6. Step 6: Final answer
   x = 86,501.62