Finding the Fourth Proportional to 141,869.93, 212,887.69 and 78,743.03

Step by Step Solution

1. Step 1: Write the proportion equation
   141,869.93 : 212,887.69 = 78,743.03 : x
2. Step 2: Convert to fraction form
   141,869.93/212,887.69 = 78,743.03/x
3. Step 3: Cross multiply
   141,869.93x = 212,887.69 × 78,743.03
4. Step 4: Simplify right side
   141,869.93x = 16,763,420,499.00
5. Step 5: Solve for x
   x = 16,763,420,499.00/141,869.93
6. Step 6: Final answer
   x = 118,160.49