Finding the Fourth Proportional to 78,843.08, 118,299.84 and 42,830.48

Step by Step Solution

1. Step 1: Write the proportion equation
   78,843.08 : 118,299.84 = 42,830.48 : x
2. Step 2: Convert to fraction form
   78,843.08/118,299.84 = 42,830.48/x
3. Step 3: Cross multiply
   78,843.08x = 118,299.84 × 42,830.48
4. Step 4: Simplify right side
   78,843.08x = 5,066,838,931.12
5. Step 5: Solve for x
   x = 5,066,838,931.12/78,843.08
6. Step 6: Final answer
   x = 64,264.85