Finding the Fourth Proportional to 81,719, 112,697.34 and 53,008.76

Step by Step Solution

1. Step 1: Write the proportion equation
   81,719 : 112,697.34 = 53,008.76 : x
2. Step 2: Convert to fraction form
   81,719/112,697.34 = 53,008.76/x
3. Step 3: Cross multiply
   81,719x = 112,697.34 × 53,008.76
4. Step 4: Simplify right side
   81,719x = 5,973,946,248.70
5. Step 5: Solve for x
   x = 5,973,946,248.70/81,719
6. Step 6: Final answer
   x = 73,103.52