Finding the Fourth Proportional to 78,103.19, 107,782.45 and 42,293.34

Step by Step Solution

1. Step 1: Write the proportion equation
   78,103.19 : 107,782.45 = 42,293.34 : x
2. Step 2: Convert to fraction form
   78,103.19/107,782.45 = 42,293.34/x
3. Step 3: Cross multiply
   78,103.19x = 107,782.45 × 42,293.34
4. Step 4: Simplify right side
   78,103.19x = 4,558,479,803.88
5. Step 5: Solve for x
   x = 4,558,479,803.88/78,103.19
6. Step 6: Final answer
   x = 58,364.84