Finding the Fourth Proportional to 61,295,618.72, 91,943,427.12 and 58,230,581.60

Step by Step Solution

1. Step 1: Write the proportion equation
   61,295,618.72 : 91,943,427.12 = 58,230,581.60 : x
2. Step 2: Convert to fraction form
   61,295,618.72/91,943,427.12 = 58,230,581.60/x
3. Step 3: Cross multiply
   61,295,618.72x = 91,943,427.12 × 58,230,581.60
4. Step 4: Simplify right side
   61,295,618.72x = 5,353,919,235,494,813
5. Step 5: Solve for x
   x = 5,353,919,235,494,813/61,295,618.72
6. Step 6: Final answer
   x = 87,345,871.49