Finding the Fourth Proportional to 105,142.35, 157,715.76 and 37,678.79

Step by Step Solution

1. Step 1: Write the proportion equation
   105,142.35 : 157,715.76 = 37,678.79 : x
2. Step 2: Convert to fraction form
   105,142.35/157,715.76 = 37,678.79/x
3. Step 3: Cross multiply
   105,142.35x = 157,715.76 × 37,678.79
4. Step 4: Simplify right side
   105,142.35x = 5,942,538,212.15
5. Step 5: Solve for x
   x = 5,942,538,212.15/105,142.35
6. Step 6: Final answer
   x = 56,518.98