Finding the Fourth Proportional to 78,191.13, 107,903.14 and 42,380.22

Step by Step Solution

1. Step 1: Write the proportion equation
   78,191.13 : 107,903.14 = 42,380.22 : x
2. Step 2: Convert to fraction form
   78,191.13/107,903.14 = 42,380.22/x
3. Step 3: Cross multiply
   78,191.13x = 107,903.14 × 42,380.22
4. Step 4: Simplify right side
   78,191.13x = 4,572,958,811.89
5. Step 5: Solve for x
   x = 4,572,958,811.89/78,191.13
6. Step 6: Final answer
   x = 58,484.37