Finding the Fourth Proportional to 101,386.54, 139,914.34 and 56,067.59

Step by Step Solution

1. Step 1: Write the proportion equation
   101,386.54 : 139,914.34 = 56,067.59 : x
2. Step 2: Convert to fraction form
   101,386.54/139,914.34 = 56,067.59/x
3. Step 3: Cross multiply
   101,386.54x = 139,914.34 × 56,067.59
4. Step 4: Simplify right side
   101,386.54x = 7,844,660,059.86
5. Step 5: Solve for x
   x = 7,844,660,059.86/101,386.54
6. Step 6: Final answer
   x = 77,373.78