Finding the Fourth Proportional to 101,429.48, 139,989.36 and 59,012.62

Step by Step Solution

1. Step 1: Write the proportion equation
   101,429.48 : 139,989.36 = 59,012.62 : x
2. Step 2: Convert to fraction form
   101,429.48/139,989.36 = 59,012.62/x
3. Step 3: Cross multiply
   101,429.48x = 139,989.36 × 59,012.62
4. Step 4: Simplify right side
   101,429.48x = 8,261,138,777.05
5. Step 5: Solve for x
   x = 8,261,138,777.05/101,429.48
6. Step 6: Final answer
   x = 81,447.12