Finding the Fourth Proportional to 56,020.51, 77,304.66 and 30,870.01

Step by Step Solution

1. Step 1: Write the proportion equation
   56,020.51 : 77,304.66 = 30,870.01 : x
2. Step 2: Convert to fraction form
   56,020.51/77,304.66 = 30,870.01/x
3. Step 3: Cross multiply
   56,020.51x = 77,304.66 × 30,870.01
4. Step 4: Simplify right side
   56,020.51x = 2,386,395,627.25
5. Step 5: Solve for x
   x = 2,386,395,627.25/56,020.51
6. Step 6: Final answer
   x = 42,598.61