Finding the Fourth Proportional to 76,473, 105,486.98 and 48,129.48

Step by Step Solution

1. Step 1: Write the proportion equation
   76,473 : 105,486.98 = 48,129.48 : x
2. Step 2: Convert to fraction form
   76,473/105,486.98 = 48,129.48/x
3. Step 3: Cross multiply
   76,473x = 105,486.98 × 48,129.48
4. Step 4: Simplify right side
   76,473x = 5,077,033,494.17
5. Step 5: Solve for x
   x = 5,077,033,494.17/76,473
6. Step 6: Final answer
   x = 66,389.88