Finding the Fourth Proportional to 76,148.16, 105,084.72 and 42,612

Step by Step Solution

1. Step 1: Write the proportion equation
   76,148.16 : 105,084.72 = 42,612 : x
2. Step 2: Convert to fraction form
   76,148.16/105,084.72 = 42,612/x
3. Step 3: Cross multiply
   76,148.16x = 105,084.72 × 42,612
4. Step 4: Simplify right side
   76,148.16x = 4,477,870,088.64
5. Step 5: Solve for x
   x = 4,477,870,088.64/76,148.16
6. Step 6: Final answer
   x = 58,804.71