Finding the Fourth Proportional to 78,070.98, 107,738.31 and 42,261.01

Step by Step Solution

1. Step 1: Write the proportion equation
   78,070.98 : 107,738.31 = 42,261.01 : x
2. Step 2: Convert to fraction form
   78,070.98/107,738.31 = 42,261.01/x
3. Step 3: Cross multiply
   78,070.98x = 107,738.31 × 42,261.01
4. Step 4: Simplify right side
   78,070.98x = 4,553,129,796.29
5. Step 5: Solve for x
   x = 4,553,129,796.29/78,070.98
6. Step 6: Final answer
   x = 58,320.39