Finding the Fourth Proportional to 73,291.52, 109,875.72 and 51,039.20

Step by Step Solution

1. Step 1: Write the proportion equation
   73,291.52 : 109,875.72 = 51,039.20 : x
2. Step 2: Convert to fraction form
   73,291.52/109,875.72 = 51,039.20/x
3. Step 3: Cross multiply
   73,291.52x = 109,875.72 × 51,039.20
4. Step 4: Simplify right side
   73,291.52x = 5,607,968,848.22
5. Step 5: Solve for x
   x = 5,607,968,848.22/73,291.52
6. Step 6: Final answer
   x = 76,515.93