Finding the Fourth Proportional to 42,914.82, 64,056.56 and 39,906.48

Step by Step Solution

1. Step 1: Write the proportion equation
   42,914.82 : 64,056.56 = 39,906.48 : x
2. Step 2: Convert to fraction form
   42,914.82/64,056.56 = 39,906.48/x
3. Step 3: Cross multiply
   42,914.82x = 64,056.56 × 39,906.48
4. Step 4: Simplify right side
   42,914.82x = 2,556,271,830.51
5. Step 5: Solve for x
   x = 2,556,271,830.51/42,914.82
6. Step 6: Final answer
   x = 59,566.18