Finding the Fourth Proportional to 77,449.35, 116,075.60 and 42,348

Step by Step Solution

1. Step 1: Write the proportion equation
   77,449.35 : 116,075.60 = 42,348 : x
2. Step 2: Convert to fraction form
   77,449.35/116,075.60 = 42,348/x
3. Step 3: Cross multiply
   77,449.35x = 116,075.60 × 42,348
4. Step 4: Simplify right side
   77,449.35x = 4,915,569,614.67
5. Step 5: Solve for x
   x = 4,915,569,614.67/77,449.35
6. Step 6: Final answer
   x = 63,468.18