Finding the Fourth Proportional to 76,546, 105,643.38 and 43,012

Step by Step Solution

1. Step 1: Write the proportion equation
   76,546 : 105,643.38 = 43,012 : x
2. Step 2: Convert to fraction form
   76,546/105,643.38 = 43,012/x
3. Step 3: Cross multiply
   76,546x = 105,643.38 × 43,012
4. Step 4: Simplify right side
   76,546x = 4,543,933,060.56
5. Step 5: Solve for x
   x = 4,543,933,060.56/76,546
6. Step 6: Final answer
   x = 59,362.12