Finding the Fourth Proportional to 103,680.80, 155,521.20 and 37,123.10

Step by Step Solution

1. Step 1: Write the proportion equation
   103,680.80 : 155,521.20 = 37,123.10 : x
2. Step 2: Convert to fraction form
   103,680.80/155,521.20 = 37,123.10/x
3. Step 3: Cross multiply
   103,680.80x = 155,521.20 × 37,123.10
4. Step 4: Simplify right side
   103,680.80x = 5,773,429,059.72
5. Step 5: Solve for x
   x = 5,773,429,059.72/103,680.80
6. Step 6: Final answer
   x = 55,684.65