Finding the Fourth Proportional to 78,206.88, 107,925.52 and 42,396.88

Step by Step Solution

1. Step 1: Write the proportion equation
   78,206.88 : 107,925.52 = 42,396.88 : x
2. Step 2: Convert to fraction form
   78,206.88/107,925.52 = 42,396.88/x
3. Step 3: Cross multiply
   78,206.88x = 107,925.52 × 42,396.88
4. Step 4: Simplify right side
   78,206.88x = 4,575,705,320.38
5. Step 5: Solve for x
   x = 4,575,705,320.38/78,206.88
6. Step 6: Final answer
   x = 58,507.71