Finding the Fourth Proportional to 76,296.51, 105,300.03 and 42,312.56

Step by Step Solution

1. Step 1: Write the proportion equation
   76,296.51 : 105,300.03 = 42,312.56 : x
2. Step 2: Convert to fraction form
   76,296.51/105,300.03 = 42,312.56/x
3. Step 3: Cross multiply
   76,296.51x = 105,300.03 × 42,312.56
4. Step 4: Simplify right side
   76,296.51x = 4,455,513,469.55
5. Step 5: Solve for x
   x = 4,455,513,469.55/76,296.51
6. Step 6: Final answer
   x = 58,397.34