Finding the Fourth Proportional to 112,735.27, 155,499.75 and 72,499.93

Step by Step Solution

1. Step 1: Write the proportion equation
   112,735.27 : 155,499.75 = 72,499.93 : x
2. Step 2: Convert to fraction form
   112,735.27/155,499.75 = 72,499.93/x
3. Step 3: Cross multiply
   112,735.27x = 155,499.75 × 72,499.93
4. Step 4: Simplify right side
   112,735.27x = 11,273,720,990.02
5. Step 5: Solve for x
   x = 11,273,720,990.02/112,735.27
6. Step 6: Final answer
   x = 100,001.72