Finding the Fourth Proportional to 76,138.50, 105,071.16 and 42,610.98

Step by Step Solution

1. Step 1: Write the proportion equation
   76,138.50 : 105,071.16 = 42,610.98 : x
2. Step 2: Convert to fraction form
   76,138.50/105,071.16 = 42,610.98/x
3. Step 3: Cross multiply
   76,138.50x = 105,071.16 × 42,610.98
4. Step 4: Simplify right side
   76,138.50x = 4,477,185,097.34
5. Step 5: Solve for x
   x = 4,477,185,097.34/76,138.50
6. Step 6: Final answer
   x = 58,803.17