Finding the Fourth Proportional to 103,112,897.87, 142,298,495.89 and 56,072,722.55

Step by Step Solution

1. Step 1: Write the proportion equation
   103,112,897.87 : 142,298,495.89 = 56,072,722.55 : x
2. Step 2: Convert to fraction form
   103,112,897.87/142,298,495.89 = 56,072,722.55/x
3. Step 3: Cross multiply
   103,112,897.87x = 142,298,495.89 × 56,072,722.55
4. Step 4: Simplify right side
   103,112,897.87x = 7,979,064,078,470,611
5. Step 5: Solve for x
   x = 7,979,064,078,470,611/103,112,897.87
6. Step 6: Final answer
   x = 77,381,823.64