Finding the Fourth Proportional to 69,308.72, 103,947.40 and 31,832.78

Step by Step Solution

1. Step 1: Write the proportion equation
   69,308.72 : 103,947.40 = 31,832.78 : x
2. Step 2: Convert to fraction form
   69,308.72/103,947.40 = 31,832.78/x
3. Step 3: Cross multiply
   69,308.72x = 103,947.40 × 31,832.78
4. Step 4: Simplify right side
   69,308.72x = 3,308,934,715.77
5. Step 5: Solve for x
   x = 3,308,934,715.77/69,308.72
6. Step 6: Final answer
   x = 47,741.97