Finding the Fourth Proportional to 127,824.63, 191,669.78 and 56,716.47

Step by Step Solution

1. Step 1: Write the proportion equation
   127,824.63 : 191,669.78 = 56,716.47 : x
2. Step 2: Convert to fraction form
   127,824.63/191,669.78 = 56,716.47/x
3. Step 3: Cross multiply
   127,824.63x = 191,669.78 × 56,716.47
4. Step 4: Simplify right side
   127,824.63x = 10,870,833,043.69
5. Step 5: Solve for x
   x = 10,870,833,043.69/127,824.63
6. Step 6: Final answer
   x = 85,044.90