Finding the Fourth Proportional to 65,996.68, 90,987.31 and 52,429.74

Step by Step Solution

1. Step 1: Write the proportion equation
   65,996.68 : 90,987.31 = 52,429.74 : x
2. Step 2: Convert to fraction form
   65,996.68/90,987.31 = 52,429.74/x
3. Step 3: Cross multiply
   65,996.68x = 90,987.31 × 52,429.74
4. Step 4: Simplify right side
   65,996.68x = 4,770,441,006.60
5. Step 5: Solve for x
   x = 4,770,441,006.60/65,996.68
6. Step 6: Final answer
   x = 72,283.05