Finding the Fourth Proportional to 65,615.67, 90,525.94 and 42,967.58

Step by Step Solution

1. Step 1: Write the proportion equation
   65,615.67 : 90,525.94 = 42,967.58 : x
2. Step 2: Convert to fraction form
   65,615.67/90,525.94 = 42,967.58/x
3. Step 3: Cross multiply
   65,615.67x = 90,525.94 × 42,967.58
4. Step 4: Simplify right side
   65,615.67x = 3,889,680,008.98
5. Step 5: Solve for x
   x = 3,889,680,008.98/65,615.67
6. Step 6: Final answer
   x = 59,279.74