Finding the Fourth Proportional to 76,507.50, 105,590.28 and 42,973.50

Step by Step Solution

1. Step 1: Write the proportion equation
   76,507.50 : 105,590.28 = 42,973.50 : x
2. Step 2: Convert to fraction form
   76,507.50/105,590.28 = 42,973.50/x
3. Step 3: Cross multiply
   76,507.50x = 105,590.28 × 42,973.50
4. Step 4: Simplify right side
   76,507.50x = 4,537,583,897.58
5. Step 5: Solve for x
   x = 4,537,583,897.58/76,507.50
6. Step 6: Final answer
   x = 59,309.01