Finding the Fourth Proportional to 101,359.63, 139,875.55 and 56,039.59

Step by Step Solution

1. Step 1: Write the proportion equation
   101,359.63 : 139,875.55 = 56,039.59 : x
2. Step 2: Convert to fraction form
   101,359.63/139,875.55 = 56,039.59/x
3. Step 3: Cross multiply
   101,359.63x = 139,875.55 × 56,039.59
4. Step 4: Simplify right side
   101,359.63x = 7,838,568,473.02
5. Step 5: Solve for x
   x = 7,838,568,473.02/101,359.63
6. Step 6: Final answer
   x = 77,334.23