Finding the Fourth Proportional to 78,145.75, 107,841.18 and 42,336.01

Step by Step Solution

1. Step 1: Write the proportion equation
   78,145.75 : 107,841.18 = 42,336.01 : x
2. Step 2: Convert to fraction form
   78,145.75/107,841.18 = 42,336.01/x
3. Step 3: Cross multiply
   78,145.75x = 107,841.18 × 42,336.01
4. Step 4: Simplify right side
   78,145.75x = 4,565,565,274.89
5. Step 5: Solve for x
   x = 4,565,565,274.89/78,145.75
6. Step 6: Final answer
   x = 58,423.72