Finding the Fourth Proportional to 89,490.61, 134,207.51 and 30,312.42

Step by Step Solution

1. Step 1: Write the proportion equation
   89,490.61 : 134,207.51 = 30,312.42 : x
2. Step 2: Convert to fraction form
   89,490.61/134,207.51 = 30,312.42/x
3. Step 3: Cross multiply
   89,490.61x = 134,207.51 × 30,312.42
4. Step 4: Simplify right side
   89,490.61x = 4,068,154,410.27
5. Step 5: Solve for x
   x = 4,068,154,410.27/89,490.61
6. Step 6: Final answer
   x = 45,459.01