Finding the Fourth Proportional to 58,848.72, 81,207.82 and 31,991

Step by Step Solution

1. Step 1: Write the proportion equation
   58,848.72 : 81,207.82 = 31,991 : x
2. Step 2: Convert to fraction form
   58,848.72/81,207.82 = 31,991/x
3. Step 3: Cross multiply
   58,848.72x = 81,207.82 × 31,991
4. Step 4: Simplify right side
   58,848.72x = 2,597,919,369.62
5. Step 5: Solve for x
   x = 2,597,919,369.62/58,848.72
6. Step 6: Final answer
   x = 44,145.72