Finding the Fourth Proportional to 78,077.51, 107,746.94 and 42,267.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,077.51 : 107,746.94 = 42,267.50 : x
2. Step 2: Convert to fraction form
   78,077.51/107,746.94 = 42,267.50/x
3. Step 3: Cross multiply
   78,077.51x = 107,746.94 × 42,267.50
4. Step 4: Simplify right side
   78,077.51x = 4,554,193,036.38
5. Step 5: Solve for x
   x = 4,554,193,036.38/78,077.51
6. Step 6: Final answer
   x = 58,329.13