Finding the Fourth Proportional to 55,870.12, 77,100.76 and 30,719.62

Step by Step Solution

1. Step 1: Write the proportion equation
   55,870.12 : 77,100.76 = 30,719.62 : x
2. Step 2: Convert to fraction form
   55,870.12/77,100.76 = 30,719.62/x
3. Step 3: Cross multiply
   55,870.12x = 77,100.76 × 30,719.62
4. Step 4: Simplify right side
   55,870.12x = 2,368,506,048.91
5. Step 5: Solve for x
   x = 2,368,506,048.91/55,870.12
6. Step 6: Final answer
   x = 42,393.07