Finding the Fourth Proportional to 105,009.88, 157,493.34 and 30,109.96

Step by Step Solution

1. Step 1: Write the proportion equation
   105,009.88 : 157,493.34 = 30,109.96 : x
2. Step 2: Convert to fraction form
   105,009.88/157,493.34 = 30,109.96/x
3. Step 3: Cross multiply
   105,009.88x = 157,493.34 × 30,109.96
4. Step 4: Simplify right side
   105,009.88x = 4,742,118,167.67
5. Step 5: Solve for x
   x = 4,742,118,167.67/105,009.88
6. Step 6: Final answer
   x = 45,158.78