Finding the Fourth Proportional to 155,870.86, 233,840.94 and 72,719.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,870.86 : 233,840.94 = 72,719.50 : x
2. Step 2: Convert to fraction form
   155,870.86/233,840.94 = 72,719.50/x
3. Step 3: Cross multiply
   155,870.86x = 233,840.94 × 72,719.50
4. Step 4: Simplify right side
   155,870.86x = 17,004,796,236.33
5. Step 5: Solve for x
   x = 17,004,796,236.33/155,870.86
6. Step 6: Final answer
   x = 109,095.42