Finding the Fourth Proportional to 61,162.51, 84,390.78 and 59,146.56

Step by Step Solution

1. Step 1: Write the proportion equation
   61,162.51 : 84,390.78 = 59,146.56 : x
2. Step 2: Convert to fraction form
   61,162.51/84,390.78 = 59,146.56/x
3. Step 3: Cross multiply
   61,162.51x = 84,390.78 × 59,146.56
4. Step 4: Simplify right side
   61,162.51x = 4,991,424,332.72
5. Step 5: Solve for x
   x = 4,991,424,332.72/61,162.51
6. Step 6: Final answer
   x = 81,609.21