Finding the Fourth Proportional to 101,756.81, 140,426.16 and 56,436.77

Step by Step Solution

1. Step 1: Write the proportion equation
   101,756.81 : 140,426.16 = 56,436.77 : x
2. Step 2: Convert to fraction form
   101,756.81/140,426.16 = 56,436.77/x
3. Step 3: Cross multiply
   101,756.81x = 140,426.16 × 56,436.77
4. Step 4: Simplify right side
   101,756.81x = 7,925,199,033.33
5. Step 5: Solve for x
   x = 7,925,199,033.33/101,756.81
6. Step 6: Final answer
   x = 77,883.72