Finding the Fourth Proportional to 105,484.86, 145,570.46 and 57,737.18

Step by Step Solution

1. Step 1: Write the proportion equation
   105,484.86 : 145,570.46 = 57,737.18 : x
2. Step 2: Convert to fraction form
   105,484.86/145,570.46 = 57,737.18/x
3. Step 3: Cross multiply
   105,484.86x = 145,570.46 × 57,737.18
4. Step 4: Simplify right side
   105,484.86x = 8,404,827,926.94
5. Step 5: Solve for x
   x = 8,404,827,926.94/105,484.86
6. Step 6: Final answer
   x = 79,678.05