Finding the Fourth Proportional to 78,131.90, 107,814.30 and 43,670.18

Step by Step Solution

1. Step 1: Write the proportion equation
   78,131.90 : 107,814.30 = 43,670.18 : x
2. Step 2: Convert to fraction form
   78,131.90/107,814.30 = 43,670.18/x
3. Step 3: Cross multiply
   78,131.90x = 107,814.30 × 43,670.18
4. Step 4: Simplify right side
   78,131.90x = 4,708,269,887.57
5. Step 5: Solve for x
   x = 4,708,269,887.57/78,131.90
6. Step 6: Final answer
   x = 60,260.53