Finding the Fourth Proportional to 48,987.60, 73,404.60 and 42,382.80

Step by Step Solution

1. Step 1: Write the proportion equation
   48,987.60 : 73,404.60 = 42,382.80 : x
2. Step 2: Convert to fraction form
   48,987.60/73,404.60 = 42,382.80/x
3. Step 3: Cross multiply
   48,987.60x = 73,404.60 × 42,382.80
4. Step 4: Simplify right side
   48,987.60x = 3,111,092,480.88
5. Step 5: Solve for x
   x = 3,111,092,480.88/48,987.60
6. Step 6: Final answer
   x = 63,507.75