Finding the Fourth Proportional to 76,303.08, 105,298.48 and 42,313.98

Step by Step Solution

1. Step 1: Write the proportion equation
   76,303.08 : 105,298.48 = 42,313.98 : x
2. Step 2: Convert to fraction form
   76,303.08/105,298.48 = 42,313.98/x
3. Step 3: Cross multiply
   76,303.08x = 105,298.48 × 42,313.98
4. Step 4: Simplify right side
   76,303.08x = 4,455,597,776.75
5. Step 5: Solve for x
   x = 4,455,597,776.75/76,303.08
6. Step 6: Final answer
   x = 58,393.42