Finding the Fourth Proportional to 78,178.58, 107,886.52 and 42,368.58

Step by Step Solution

1. Step 1: Write the proportion equation
   78,178.58 : 107,886.52 = 42,368.58 : x
2. Step 2: Convert to fraction form
   78,178.58/107,886.52 = 42,368.58/x
3. Step 3: Cross multiply
   78,178.58x = 107,886.52 × 42,368.58
4. Step 4: Simplify right side
   78,178.58x = 4,570,998,706.50
5. Step 5: Solve for x
   x = 4,570,998,706.50/78,178.58
6. Step 6: Final answer
   x = 58,468.69