Finding the Fourth Proportional to 73,075.07, 100,860.45 and 42,870.10

Step by Step Solution

1. Step 1: Write the proportion equation
   73,075.07 : 100,860.45 = 42,870.10 : x
2. Step 2: Convert to fraction form
   73,075.07/100,860.45 = 42,870.10/x
3. Step 3: Cross multiply
   73,075.07x = 100,860.45 × 42,870.10
4. Step 4: Simplify right side
   73,075.07x = 4,323,897,325.39
5. Step 5: Solve for x
   x = 4,323,897,325.39/73,075.07
6. Step 6: Final answer
   x = 59,170.62