Finding the Fourth Proportional to 86,617,499.52, 129,883,733.94 and 42,847,686.60

Step by Step Solution

1. Step 1: Write the proportion equation
   86,617,499.52 : 129,883,733.94 = 42,847,686.60 : x
2. Step 2: Convert to fraction form
   86,617,499.52/129,883,733.94 = 42,847,686.60/x
3. Step 3: Cross multiply
   86,617,499.52x = 129,883,733.94 × 42,847,686.60
4. Step 4: Simplify right side
   86,617,499.52x = 5,565,217,526,298,903
5. Step 5: Solve for x
   x = 5,565,217,526,298,903/86,617,499.52
6. Step 6: Final answer
   x = 64,250,498.54