Finding the Fourth Proportional to 76,368.47, 105,384.83 and 42,376.55

Step by Step Solution

1. Step 1: Write the proportion equation
   76,368.47 : 105,384.83 = 42,376.55 : x
2. Step 2: Convert to fraction form
   76,368.47/105,384.83 = 42,376.55/x
3. Step 3: Cross multiply
   76,368.47x = 105,384.83 × 42,376.55
4. Step 4: Simplify right side
   76,368.47x = 4,465,844,778.93
5. Step 5: Solve for x
   x = 4,465,844,778.93/76,368.47
6. Step 6: Final answer
   x = 58,477.60