Finding the Fourth Proportional to 58,667.78, 80,961.36 and 31,810.20

Step by Step Solution

1. Step 1: Write the proportion equation
   58,667.78 : 80,961.36 = 31,810.20 : x
2. Step 2: Convert to fraction form
   58,667.78/80,961.36 = 31,810.20/x
3. Step 3: Cross multiply
   58,667.78x = 80,961.36 × 31,810.20
4. Step 4: Simplify right side
   58,667.78x = 2,575,397,053.87
5. Step 5: Solve for x
   x = 2,575,397,053.87/58,667.78
6. Step 6: Final answer
   x = 43,897.98