Finding the Fourth Proportional to 155,898.59, 215,174.50 and 101,355.84

Step by Step Solution

1. Step 1: Write the proportion equation
   155,898.59 : 215,174.50 = 101,355.84 : x
2. Step 2: Convert to fraction form
   155,898.59/215,174.50 = 101,355.84/x
3. Step 3: Cross multiply
   155,898.59x = 215,174.50 × 101,355.84
4. Step 4: Simplify right side
   155,898.59x = 21,809,191,940.69
5. Step 5: Solve for x
   x = 21,809,191,940.69/155,898.59
6. Step 6: Final answer
   x = 139,893.46