Finding the Fourth Proportional to 91,421,635.87, 137,152,776.50 and 42,873,614.79

Step by Step Solution

1. Step 1: Write the proportion equation
   91,421,635.87 : 137,152,776.50 = 42,873,614.79 : x
2. Step 2: Convert to fraction form
   91,421,635.87/137,152,776.50 = 42,873,614.79/x
3. Step 3: Cross multiply
   91,421,635.87x = 137,152,776.50 × 42,873,614.79
4. Step 4: Simplify right side
   91,421,635.87x = 5,880,235,306,713,428
5. Step 5: Solve for x
   x = 5,880,235,306,713,428/91,421,635.87
6. Step 6: Final answer
   x = 64,319,952.83