Finding the Fourth Proportional to 78,034.12, 107,686.74 and 42,224.77

Step by Step Solution

1. Step 1: Write the proportion equation
   78,034.12 : 107,686.74 = 42,224.77 : x
2. Step 2: Convert to fraction form
   78,034.12/107,686.74 = 42,224.77/x
3. Step 3: Cross multiply
   78,034.12x = 107,686.74 × 42,224.77
4. Step 4: Simplify right side
   78,034.12x = 4,547,047,828.55
5. Step 5: Solve for x
   x = 4,547,047,828.55/78,034.12
6. Step 6: Final answer
   x = 58,270.00