Finding the Fourth Proportional to 46,619.83, 64,340.01 and 28,469.55

Step by Step Solution

1. Step 1: Write the proportion equation
   46,619.83 : 64,340.01 = 28,469.55 : x
2. Step 2: Convert to fraction form
   46,619.83/64,340.01 = 28,469.55/x
3. Step 3: Cross multiply
   46,619.83x = 64,340.01 × 28,469.55
4. Step 4: Simplify right side
   46,619.83x = 1,831,731,131.70
5. Step 5: Solve for x
   x = 1,831,731,131.70/46,619.83
6. Step 6: Final answer
   x = 39,290.82