Finding the Fourth Proportional to 118,012.55, 162,917.53 and 79,973.12

Step by Step Solution

1. Step 1: Write the proportion equation
   118,012.55 : 162,917.53 = 79,973.12 : x
2. Step 2: Convert to fraction form
   118,012.55/162,917.53 = 79,973.12/x
3. Step 3: Cross multiply
   118,012.55x = 162,917.53 × 79,973.12
4. Step 4: Simplify right side
   118,012.55x = 13,029,023,384.15
5. Step 5: Solve for x
   x = 13,029,023,384.15/118,012.55
6. Step 6: Final answer
   x = 110,403.71