Finding the Fourth Proportional to 72,656.79, 108,984.48 and 43,053.31

Step by Step Solution

1. Step 1: Write the proportion equation
   72,656.79 : 108,984.48 = 43,053.31 : x
2. Step 2: Convert to fraction form
   72,656.79/108,984.48 = 43,053.31/x
3. Step 3: Cross multiply
   72,656.79x = 108,984.48 × 43,053.31
4. Step 4: Simplify right side
   72,656.79x = 4,692,142,602.63
5. Step 5: Solve for x
   x = 4,692,142,602.63/72,656.79
6. Step 6: Final answer
   x = 64,579.55