Finding the Fourth Proportional to 91,948.64, 137,731.59 and 58,503.03

Step by Step Solution

1. Step 1: Write the proportion equation
   91,948.64 : 137,731.59 = 58,503.03 : x
2. Step 2: Convert to fraction form
   91,948.64/137,731.59 = 58,503.03/x
3. Step 3: Cross multiply
   91,948.64x = 137,731.59 × 58,503.03
4. Step 4: Simplify right side
   91,948.64x = 8,057,714,825.22
5. Step 5: Solve for x
   x = 8,057,714,825.22/91,948.64
6. Step 6: Final answer
   x = 87,632.78