Finding the Fourth Proportional to 101,292.75, 139,784.00 and 56,580.75

Step by Step Solution

1. Step 1: Write the proportion equation
   101,292.75 : 139,784.00 = 56,580.75 : x
2. Step 2: Convert to fraction form
   101,292.75/139,784.00 = 56,580.75/x
3. Step 3: Cross multiply
   101,292.75x = 139,784.00 × 56,580.75
4. Step 4: Simplify right side
   101,292.75x = 7,909,083,275.10
5. Step 5: Solve for x
   x = 7,909,083,275.10/101,292.75
6. Step 6: Final answer
   x = 78,081.44