Finding the Fourth Proportional to 342,088.72, 472,068.51 and 189,117.18

Step by Step Solution

1. Step 1: Write the proportion equation
   342,088.72 : 472,068.51 = 189,117.18 : x
2. Step 2: Convert to fraction form
   342,088.72/472,068.51 = 189,117.18/x
3. Step 3: Cross multiply
   342,088.72x = 472,068.51 × 189,117.18
4. Step 4: Simplify right side
   342,088.72x = 89,276,264,668.81
5. Step 5: Solve for x
   x = 89,276,264,668.81/342,088.72
6. Step 6: Final answer
   x = 260,974.01