Finding the Fourth Proportional to 188,316, 259,876.32 and 103,434.72

Step by Step Solution

1. Step 1: Write the proportion equation
   188,316 : 259,876.32 = 103,434.72 : x
2. Step 2: Convert to fraction form
   188,316/259,876.32 = 103,434.72/x
3. Step 3: Cross multiply
   188,316x = 259,876.32 × 103,434.72
4. Step 4: Simplify right side
   188,316x = 26,880,234,393.83
5. Step 5: Solve for x
   x = 26,880,234,393.83/188,316
6. Step 6: Final answer
   x = 142,740.05