Finding the Fourth Proportional to 101,816.59, 140,504.74 and 56,493.59

Step by Step Solution

1. Step 1: Write the proportion equation
   101,816.59 : 140,504.74 = 56,493.59 : x
2. Step 2: Convert to fraction form
   101,816.59/140,504.74 = 56,493.59/x
3. Step 3: Cross multiply
   101,816.59x = 140,504.74 × 56,493.59
4. Step 4: Simplify right side
   101,816.59x = 7,937,617,834.14
5. Step 5: Solve for x
   x = 7,937,617,834.14/101,816.59
6. Step 6: Final answer
   x = 77,959.97