Finding the Fourth Proportional to 66,632.92, 91,944.56 and 42,791.90

Step by Step Solution

1. Step 1: Write the proportion equation
   66,632.92 : 91,944.56 = 42,791.90 : x
2. Step 2: Convert to fraction form
   66,632.92/91,944.56 = 42,791.90/x
3. Step 3: Cross multiply
   66,632.92x = 91,944.56 × 42,791.90
4. Step 4: Simplify right side
   66,632.92x = 3,934,482,064.32
5. Step 5: Solve for x
   x = 3,934,482,064.32/66,632.92
6. Step 6: Final answer
   x = 59,047.12