Finding the Fourth Proportional to 28,164.34, 42,228.69 and 23,987.98

Step by Step Solution

1. Step 1: Write the proportion equation
   28,164.34 : 42,228.69 = 23,987.98 : x
2. Step 2: Convert to fraction form
   28,164.34/42,228.69 = 23,987.98/x
3. Step 3: Cross multiply
   28,164.34x = 42,228.69 × 23,987.98
4. Step 4: Simplify right side
   28,164.34x = 1,012,980,971.15
5. Step 5: Solve for x
   x = 1,012,980,971.15/28,164.34
6. Step 6: Final answer
   x = 35,966.79