Finding the Fourth Proportional to 61,238,828.70, 91,732,271.85 and 42,091,206.30

Step by Step Solution

1. Step 1: Write the proportion equation
   61,238,828.70 : 91,732,271.85 = 42,091,206.30 : x
2. Step 2: Convert to fraction form
   61,238,828.70/91,732,271.85 = 42,091,206.30/x
3. Step 3: Cross multiply
   61,238,828.70x = 91,732,271.85 × 42,091,206.30
4. Step 4: Simplify right side
   61,238,828.70x = 3,861,121,978,806,032
5. Step 5: Solve for x
   x = 3,861,121,978,806,032/61,238,828.70
6. Step 6: Final answer
   x = 63,050,225.83