Finding the Fourth Proportional to 76,734.72, 115,071.84 and 37,280.16

Step by Step Solution

1. Step 1: Write the proportion equation
   76,734.72 : 115,071.84 = 37,280.16 : x
2. Step 2: Convert to fraction form
   76,734.72/115,071.84 = 37,280.16/x
3. Step 3: Cross multiply
   76,734.72x = 115,071.84 × 37,280.16
4. Step 4: Simplify right side
   76,734.72x = 4,289,896,606.69
5. Step 5: Solve for x
   x = 4,289,896,606.69/76,734.72
6. Step 6: Final answer
   x = 55,905.55