Finding the Fourth Proportional to 342,109.92, 472,075.51 and 189,123.45

Step by Step Solution

1. Step 1: Write the proportion equation
   342,109.92 : 472,075.51 = 189,123.45 : x
2. Step 2: Convert to fraction form
   342,109.92/472,075.51 = 189,123.45/x
3. Step 3: Cross multiply
   342,109.92x = 472,075.51 × 189,123.45
4. Step 4: Simplify right side
   342,109.92x = 89,280,549,111.71
5. Step 5: Solve for x
   x = 89,280,549,111.71/342,109.92
6. Step 6: Final answer
   x = 260,970.36