Finding the Fourth Proportional to 72,656.24, 108,918.32 and 64,783.04

Step by Step Solution

1. Step 1: Write the proportion equation
   72,656.24 : 108,918.32 = 64,783.04 : x
2. Step 2: Convert to fraction form
   72,656.24/108,918.32 = 64,783.04/x
3. Step 3: Cross multiply
   72,656.24x = 108,918.32 × 64,783.04
4. Step 4: Simplify right side
   72,656.24x = 7,056,059,881.29
5. Step 5: Solve for x
   x = 7,056,059,881.29/72,656.24
6. Step 6: Final answer
   x = 97,115.68