Finding the Fourth Proportional to 115,152.42, 172,597.60 and 70,074.36

Step by Step Solution

1. Step 1: Write the proportion equation
   115,152.42 : 172,597.60 = 70,074.36 : x
2. Step 2: Convert to fraction form
   115,152.42/172,597.60 = 70,074.36/x
3. Step 3: Cross multiply
   115,152.42x = 172,597.60 × 70,074.36
4. Step 4: Simplify right side
   115,152.42x = 12,094,665,494.55
5. Step 5: Solve for x
   x = 12,094,665,494.55/115,152.42
6. Step 6: Final answer
   x = 105,031.80