Finding the Fourth Proportional to 118,905.42, 178,357.76 and 30,158.72

Step by Step Solution

1. Step 1: Write the proportion equation
   118,905.42 : 178,357.76 = 30,158.72 : x
2. Step 2: Convert to fraction form
   118,905.42/178,357.76 = 30,158.72/x
3. Step 3: Cross multiply
   118,905.42x = 178,357.76 × 30,158.72
4. Step 4: Simplify right side
   118,905.42x = 5,379,041,743.67
5. Step 5: Solve for x
   x = 5,379,041,743.67/118,905.42
6. Step 6: Final answer
   x = 45,237.99