Finding the Fourth Proportional to 78,075.90, 107,743.47 and 42,265.60

Step by Step Solution

1. Step 1: Write the proportion equation
   78,075.90 : 107,743.47 = 42,265.60 : x
2. Step 2: Convert to fraction form
   78,075.90/107,743.47 = 42,265.60/x
3. Step 3: Cross multiply
   78,075.90x = 107,743.47 × 42,265.60
4. Step 4: Simplify right side
   78,075.90x = 4,553,841,977.78
5. Step 5: Solve for x
   x = 4,553,841,977.78/78,075.90
6. Step 6: Final answer
   x = 58,325.83