Finding the Fourth Proportional to 89,199.70, 123,101.28 and 58,931.92

Step by Step Solution

1. Step 1: Write the proportion equation
   89,199.70 : 123,101.28 = 58,931.92 : x
2. Step 2: Convert to fraction form
   89,199.70/123,101.28 = 58,931.92/x
3. Step 3: Cross multiply
   89,199.70x = 123,101.28 × 58,931.92
4. Step 4: Simplify right side
   89,199.70x = 7,254,594,784.86
5. Step 5: Solve for x
   x = 7,254,594,784.86/89,199.70
6. Step 6: Final answer
   x = 81,329.81