Finding the Fourth Proportional to 91,886.20, 126,822.72 and 56,068.54

Step by Step Solution

1. Step 1: Write the proportion equation
   91,886.20 : 126,822.72 = 56,068.54 : x
2. Step 2: Convert to fraction form
   91,886.20/126,822.72 = 56,068.54/x
3. Step 3: Cross multiply
   91,886.20x = 126,822.72 × 56,068.54
4. Step 4: Simplify right side
   91,886.20x = 7,110,764,749.23
5. Step 5: Solve for x
   x = 7,110,764,749.23/91,886.20
6. Step 6: Final answer
   x = 77,386.65