Finding the Fourth Proportional to 78,191.33, 107,903.64 and 42,381.23

Step by Step Solution

1. Step 1: Write the proportion equation
   78,191.33 : 107,903.64 = 42,381.23 : x
2. Step 2: Convert to fraction form
   78,191.33/107,903.64 = 42,381.23/x
3. Step 3: Cross multiply
   78,191.33x = 107,903.64 × 42,381.23
4. Step 4: Simplify right side
   78,191.33x = 4,573,088,604.09
5. Step 5: Solve for x
   x = 4,573,088,604.09/78,191.33
6. Step 6: Final answer
   x = 58,485.88