Finding the Fourth Proportional to 140,280.72, 193,580.28 and 76,606.32

Step by Step Solution

1. Step 1: Write the proportion equation
   140,280.72 : 193,580.28 = 76,606.32 : x
2. Step 2: Convert to fraction form
   140,280.72/193,580.28 = 76,606.32/x
3. Step 3: Cross multiply
   140,280.72x = 193,580.28 × 76,606.32
4. Step 4: Simplify right side
   140,280.72x = 14,829,472,875.37
5. Step 5: Solve for x
   x = 14,829,472,875.37/140,280.72
6. Step 6: Final answer
   x = 105,712.84