Finding the Fourth Proportional to 56,660.34, 78,209.10 and 38,748.54

Step by Step Solution

1. Step 1: Write the proportion equation
   56,660.34 : 78,209.10 = 38,748.54 : x
2. Step 2: Convert to fraction form
   56,660.34/78,209.10 = 38,748.54/x
3. Step 3: Cross multiply
   56,660.34x = 78,209.10 × 38,748.54
4. Step 4: Simplify right side
   56,660.34x = 3,030,488,439.71
5. Step 5: Solve for x
   x = 3,030,488,439.71/56,660.34
6. Step 6: Final answer
   x = 53,485.18