Finding the Fourth Proportional to 76,148.38, 105,070.18 and 49,287.16

Step by Step Solution

1. Step 1: Write the proportion equation
   76,148.38 : 105,070.18 = 49,287.16 : x
2. Step 2: Convert to fraction form
   76,148.38/105,070.18 = 49,287.16/x
3. Step 3: Cross multiply
   76,148.38x = 105,070.18 × 49,287.16
4. Step 4: Simplify right side
   76,148.38x = 5,178,610,001.10
5. Step 5: Solve for x
   x = 5,178,610,001.10/76,148.38
6. Step 6: Final answer
   x = 68,006.84