Finding the Fourth Proportional to 31,091,861.63, 46,643,770.18 and 11,921,123.45

Step by Step Solution

1. Step 1: Write the proportion equation
   31,091,861.63 : 46,643,770.18 = 11,921,123.45 : x
2. Step 2: Convert to fraction form
   31,091,861.63/46,643,770.18 = 11,921,123.45/x
3. Step 3: Cross multiply
   31,091,861.63x = 46,643,770.18 × 11,921,123.45
4. Step 4: Simplify right side
   31,091,861.63x = 556,046,142,429,603.06
5. Step 5: Solve for x
   x = 556,046,142,429,603.06/31,091,861.63
6. Step 6: Final answer
   x = 17,883,977.13