Finding the Fourth Proportional to 55,837, 77,055.06 and 30,686.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,837 : 77,055.06 = 30,686.50 : x
2. Step 2: Convert to fraction form
   55,837/77,055.06 = 30,686.50/x
3. Step 3: Cross multiply
   55,837x = 77,055.06 × 30,686.50
4. Step 4: Simplify right side
   55,837x = 2,364,550,098.69
5. Step 5: Solve for x
   x = 2,364,550,098.69/55,837
6. Step 6: Final answer
   x = 42,347.37