Finding the Fourth Proportional to 112,613.37, 155,406.51 and 70,172.07

Step by Step Solution

1. Step 1: Write the proportion equation
   112,613.37 : 155,406.51 = 70,172.07 : x
2. Step 2: Convert to fraction form
   112,613.37/155,406.51 = 70,172.07/x
3. Step 3: Cross multiply
   112,613.37x = 155,406.51 × 70,172.07
4. Step 4: Simplify right side
   112,613.37x = 10,905,196,498.18
5. Step 5: Solve for x
   x = 10,905,196,498.18/112,613.37
6. Step 6: Final answer
   x = 96,837.49