Finding the Fourth Proportional to 114,980.46, 172,463.49 and 42,919.31

Step by Step Solution

1. Step 1: Write the proportion equation
   114,980.46 : 172,463.49 = 42,919.31 : x
2. Step 2: Convert to fraction form
   114,980.46/172,463.49 = 42,919.31/x
3. Step 3: Cross multiply
   114,980.46x = 172,463.49 × 42,919.31
4. Step 4: Simplify right side
   114,980.46x = 7,402,013,128.67
5. Step 5: Solve for x
   x = 7,402,013,128.67/114,980.46
6. Step 6: Final answer
   x = 64,376.27