Finding the Fourth Proportional to 90,293.12, 134,890.59 and 58,443.72

Step by Step Solution

1. Step 1: Write the proportion equation
   90,293.12 : 134,890.59 = 58,443.72 : x
2. Step 2: Convert to fraction form
   90,293.12/134,890.59 = 58,443.72/x
3. Step 3: Cross multiply
   90,293.12x = 134,890.59 × 58,443.72
4. Step 4: Simplify right side
   90,293.12x = 7,883,507,872.59
5. Step 5: Solve for x
   x = 7,883,507,872.59/90,293.12
6. Step 6: Final answer
   x = 87,310.17