Finding the Fourth Proportional to 311,061.76, 429,242.88 and 175,088.68

Step by Step Solution

1. Step 1: Write the proportion equation
   311,061.76 : 429,242.88 = 175,088.68 : x
2. Step 2: Convert to fraction form
   311,061.76/429,242.88 = 175,088.68/x
3. Step 3: Cross multiply
   311,061.76x = 429,242.88 × 175,088.68
4. Step 4: Simplify right side
   311,061.76x = 75,155,569,258.60
5. Step 5: Solve for x
   x = 75,155,569,258.60/311,061.76
6. Step 6: Final answer
   x = 241,609.80