Finding the Fourth Proportional to 316,498.55, 474,789.50 and 103,191.55

Step by Step Solution

1. Step 1: Write the proportion equation
   316,498.55 : 474,789.50 = 103,191.55 : x
2. Step 2: Convert to fraction form
   316,498.55/474,789.50 = 103,191.55/x
3. Step 3: Cross multiply
   316,498.55x = 474,789.50 × 103,191.55
4. Step 4: Simplify right side
   316,498.55x = 48,994,263,499.73
5. Step 5: Solve for x
   x = 48,994,263,499.73/316,498.55
6. Step 6: Final answer
   x = 154,800.91