Finding the Fourth Proportional to 61,111.74, 91,690.86 and 31,510.68

Step by Step Solution

1. Step 1: Write the proportion equation
   61,111.74 : 91,690.86 = 31,510.68 : x
2. Step 2: Convert to fraction form
   61,111.74/91,690.86 = 31,510.68/x
3. Step 3: Cross multiply
   61,111.74x = 91,690.86 × 31,510.68
4. Step 4: Simplify right side
   61,111.74x = 2,889,241,348.38
5. Step 5: Solve for x
   x = 2,889,241,348.38/61,111.74
6. Step 6: Final answer
   x = 47,278.01