Finding the Fourth Proportional to 66,042.76, 91,139 and 37,749.05

Step by Step Solution

1. Step 1: Write the proportion equation
   66,042.76 : 91,139 = 37,749.05 : x
2. Step 2: Convert to fraction form
   66,042.76/91,139 = 37,749.05/x
3. Step 3: Cross multiply
   66,042.76x = 91,139 × 37,749.05
4. Step 4: Simplify right side
   66,042.76x = 3,440,410,667.95
5. Step 5: Solve for x
   x = 3,440,410,667.95/66,042.76
6. Step 6: Final answer
   x = 52,093.68