Finding the Fourth Proportional to 89,688.78, 134,463.38 and 58,031.96

Step by Step Solution

1. Step 1: Write the proportion equation
   89,688.78 : 134,463.38 = 58,031.96 : x
2. Step 2: Convert to fraction form
   89,688.78/134,463.38 = 58,031.96/x
3. Step 3: Cross multiply
   89,688.78x = 134,463.38 × 58,031.96
4. Step 4: Simplify right side
   89,688.78x = 7,803,172,527.15
5. Step 5: Solve for x
   x = 7,803,172,527.15/89,688.78
6. Step 6: Final answer
   x = 87,002.77