Finding the Fourth Proportional to 147,900.56, 204,144.64 and 87,492.20

Step by Step Solution

1. Step 1: Write the proportion equation
   147,900.56 : 204,144.64 = 87,492.20 : x
2. Step 2: Convert to fraction form
   147,900.56/204,144.64 = 87,492.20/x
3. Step 3: Cross multiply
   147,900.56x = 204,144.64 × 87,492.20
4. Step 4: Simplify right side
   147,900.56x = 17,861,063,671.81
5. Step 5: Solve for x
   x = 17,861,063,671.81/147,900.56
6. Step 6: Final answer
   x = 120,764.00