Finding the Fourth Proportional to 78,106.77, 107,787.15 and 42,296.76

Step by Step Solution

1. Step 1: Write the proportion equation
   78,106.77 : 107,787.15 = 42,296.76 : x
2. Step 2: Convert to fraction form
   78,106.77/107,787.15 = 42,296.76/x
3. Step 3: Cross multiply
   78,106.77x = 107,787.15 × 42,296.76
4. Step 4: Simplify right side
   78,106.77x = 4,559,047,214.63
5. Step 5: Solve for x
   x = 4,559,047,214.63/78,106.77
6. Step 6: Final answer
   x = 58,369.42