Finding the Fourth Proportional to 78,047.45, 107,705.76 and 42,237.46

Step by Step Solution

1. Step 1: Write the proportion equation
   78,047.45 : 107,705.76 = 42,237.46 : x
2. Step 2: Convert to fraction form
   78,047.45/107,705.76 = 42,237.46/x
3. Step 3: Cross multiply
   78,047.45x = 107,705.76 × 42,237.46
4. Step 4: Simplify right side
   78,047.45x = 4,549,217,191.24
5. Step 5: Solve for x
   x = 4,549,217,191.24/78,047.45
6. Step 6: Final answer
   x = 58,287.84