Finding the Fourth Proportional to 78,088.76, 107,762.00 and 42,278.66

Step by Step Solution

1. Step 1: Write the proportion equation
   78,088.76 : 107,762.00 = 42,278.66 : x
2. Step 2: Convert to fraction form
   78,088.76/107,762.00 = 42,278.66/x
3. Step 3: Cross multiply
   78,088.76x = 107,762.00 × 42,278.66
4. Step 4: Simplify right side
   78,088.76x = 4,556,032,612.82
5. Step 5: Solve for x
   x = 4,556,032,612.82/78,088.76
6. Step 6: Final answer
   x = 58,344.28