Finding the Fourth Proportional to 91,973, 137,844.08 and 39,320.60

Step by Step Solution

1. Step 1: Write the proportion equation
   91,973 : 137,844.08 = 39,320.60 : x
2. Step 2: Convert to fraction form
   91,973/137,844.08 = 39,320.60/x
3. Step 3: Cross multiply
   91,973x = 137,844.08 × 39,320.60
4. Step 4: Simplify right side
   91,973x = 5,420,111,932.05
5. Step 5: Solve for x
   x = 5,420,111,932.05/91,973
6. Step 6: Final answer
   x = 58,931.56