Finding the Fourth Proportional to 238,830.72, 358,271.16 and 118,917.40

Step by Step Solution

1. Step 1: Write the proportion equation
   238,830.72 : 358,271.16 = 118,917.40 : x
2. Step 2: Convert to fraction form
   238,830.72/358,271.16 = 118,917.40/x
3. Step 3: Cross multiply
   238,830.72x = 358,271.16 × 118,917.40
4. Step 4: Simplify right side
   238,830.72x = 42,604,674,842.18
5. Step 5: Solve for x
   x = 42,604,674,842.18/238,830.72
6. Step 6: Final answer
   x = 178,388.59