Finding the Fourth Proportional to 156,969.09, 235,322.25 and 72,789.33

Step by Step Solution

1. Step 1: Write the proportion equation
   156,969.09 : 235,322.25 = 72,789.33 : x
2. Step 2: Convert to fraction form
   156,969.09/235,322.25 = 72,789.33/x
3. Step 3: Cross multiply
   156,969.09x = 235,322.25 × 72,789.33
4. Step 4: Simplify right side
   156,969.09x = 17,128,948,911.59
5. Step 5: Solve for x
   x = 17,128,948,911.59/156,969.09
6. Step 6: Final answer
   x = 109,123.07