Finding the Fourth Proportional to 133,111.79, 183,698.06 and 72,686.27

Step by Step Solution

1. Step 1: Write the proportion equation
   133,111.79 : 183,698.06 = 72,686.27 : x
2. Step 2: Convert to fraction form
   133,111.79/183,698.06 = 72,686.27/x
3. Step 3: Cross multiply
   133,111.79x = 183,698.06 × 72,686.27
4. Step 4: Simplify right side
   133,111.79x = 13,352,326,787.64
5. Step 5: Solve for x
   x = 13,352,326,787.64/133,111.79
6. Step 6: Final answer
   x = 100,309.12